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Percentage Calculator

Calculate percentages quickly and accurately with our free online percentage calculator. Find X% of Y, determine what percentage one number is of another, and calculate percentage increase or decrease.

Whether you need to calculate a percentage of a number, compare two values, or find a percentage change, this calculator provides a simple and easy-to-understand result.

X% of Y Find Percentage Percentage Increase Percentage Decrease Instant Results

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Calculate Percentages

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Choose a calculation and enter your numbers.

Choose a calculation

Select the percentage calculation you need.

Calculate X% of Y

Enter a percentage and a number.

%

Example

25% of 200 = 50

How to Calculate Percentage

1

Select the type of percentage calculation you need.

2

Enter your two numbers in the input fields.

3

Click Calculate Percentage to instantly see your answer.

Percentage Formulas

X% of Y

(X ÷ 100) × Y

X is what % of Y?

(X ÷ Y) × 100

Percentage Change

((New − Original) ÷ Original) × 100

What Is a Percentage Calculator?

A percentage calculator is an online tool that makes it easy to calculate percentages without performing the calculations manually. It can determine a percentage of a number, find what percentage one value represents of another, and calculate percentage increases or decreases.

Our free percentage calculator online provides three common percentage calculations in one place. You can calculate X% of Y, determine what percentage X is of Y, or compare an original value with a new value to find the percentage change.

This makes the calculator useful for everyday calculations involving prices, discounts, increases, decreases, marks, statistics, business figures and other numerical comparisons.

What Can This Percentage Calculator Calculate?

Calculate common percentage problems quickly with simple inputs and clear results.

X% of Y

Find a percentage of any number using the standard percentage calculation formula.

What Percentage Is X of Y?

Determine what percentage one number represents compared with another number.

Percentage Increase

Compare an original value with a larger new value to calculate the percentage increase.

Percentage Decrease

Calculate how much a value has decreased as a percentage of its original value.

Percentage Change

Compare two values and determine the percentage difference between the original and new values.

Instant Calculations

Enter your numbers and get the calculated result quickly without installing additional software.

How to Use the Percentage Calculator

Calculate a percentage in just a few simple steps.

1

Choose a Calculation

Select X% of Y, X is what % of Y, or Increase / Decrease depending on the calculation you need.

2

Enter Your Numbers

Enter the required percentage or numerical values in the calculator fields.

3

View Your Result

Click Calculate Percentage to instantly see the answer, formula and calculation type.

Common Uses for a Percentage Calculator

A percentage calculator can be useful for everyday calculations involving prices, discounts, changes in values, marks and numerical comparisons.

You can use it to calculate a percentage of a number, determine what percentage one value is of another, or compare an original number with a new number to calculate the percentage increase or decrease.

Percentage calculations are also commonly used when working with discounts, price changes, test results, business figures, statistics and other numerical data.

Percentage Calculator Formulas

Percentage calculations use different formulas depending on what you want to find. The three main calculations provided by this calculator are shown below.

1. Calculate X% of Y

(X ÷ 100) × Y

For example, to calculate 25% of 200, divide 25 by 100 and multiply the result by 200. The answer is 50.

2. Find What Percentage X Is of Y

(X ÷ Y) × 100

This formula determines the percentage represented by one number compared with another number.

3. Calculate Percentage Increase or Decrease

((New − Original) ÷ Original) × 100

This formula compares a new value with its original value and expresses the change as a percentage.

Important Information About Percentage Calculations

A percentage expresses a number as a fraction of 100. Different percentage questions require different formulas, so make sure you select the calculation type that matches what you want to calculate.

When calculating percentage change, the original value is normally used as the reference value. A positive result indicates an increase, while a negative result indicates a decrease.

This calculator is intended for general numerical calculations. For official financial, legal, academic or business requirements, use the calculation rules specified by the relevant authority or organization.

Frequently Asked Questions About Percentages

How do I calculate a percentage of a number?

Multiply the percentage by the number and divide by 100. For example, 25% of 200 is calculated as (25 ÷ 100) × 200 = 50.

What is 25% of 200?

25% of 200 is 50. You can use the X% of Y option in this percentage calculator to perform the calculation.

How do I find what percentage one number is of another?

Divide the first number by the second number and multiply the result by 100. The formula is (X ÷ Y) × 100.

How do I calculate percentage increase?

Subtract the original value from the new value, divide the difference by the original value, and multiply by 100.

How do I calculate percentage decrease?

Subtract the new value from the original value, divide the difference by the original value, and multiply by 100.

Can I calculate percentage change between two numbers?

Yes. Select Increase / Decrease and enter the original and new values to calculate the percentage change.

Is this percentage calculator free?

Yes. The online percentage calculator is free to use and does not require you to install additional software.

Can I use this calculator for percentage discounts?

Yes. You can use the percentage calculations to determine a percentage amount from a price or compare an original price with a discounted price.

What is the formula for percentage change?

The standard formula is ((New − Original) ÷ Original) × 100. The result shows the percentage change relative to the original value.

Calculate Your Percentage

Use our free percentage calculator to calculate X% of Y, find percentages between numbers, and calculate percentage increases or decreases.

Calculate Percentage