Free Percentage Calculator

Calculate percentages, percentage changes, increases and decreases quickly and accurately with four useful percentage calculations.

Last Updated: August 2026

What is X% of Y?

Find a percentage of any number. Example: What is 20% of 500?

%

X is what % of Y?

Find what percentage one number represents of another.

of

Percentage Change

Calculate the percentage increase or decrease between two values.

→

Increase / Decrease by %

Increase or decrease a number by a selected percentage.

All calculations are performed locally in your browser. No calculation data is uploaded.

What Is a Percentage Calculator?

A Percentage Calculator is an online tool that helps you calculate percentages quickly without doing the formulas manually. It can find a percentage of a number, determine what percentage one number is of another, calculate percentage change, and apply a percentage increase or decrease.

The EasyTools365 Percentage Calculator is useful for everyday calculations involving discounts, prices, statistics, grades, business figures, and other percentage-based values.

How to Calculate a Percentage

To find a percentage of a number, multiply the number by the percentage and divide the result by 100.

Result = (Percentage × Number) / 100

For example, 20% of 150 is 30 because (20 × 150) / 100 = 30.

Percentage Calculation Examples

20% of 500(20 × 500) / 100 = 100
50 is what % of 200?(50 / 200) × 100 = 25%
100 to 125Percentage increase = 25%

Common Uses for Percentage Calculations

  • Calculate discounts and sale prices.
  • Calculate taxes, fees, and markups.
  • Compare changes in prices or values.
  • Calculate school grades and scores.
  • Analyze statistics and business reports.
  • Calculate increases and decreases in everyday situations.

How to Use the Percentage Calculator

  1. Choose the calculation that matches your question.
  2. Enter the required numbers.
  3. Click Calculate.
  4. Read the result shown immediately below the calculation.

Frequently Asked Questions

Yes. The EasyTools365 Percentage Calculator is free to use online.

Multiply the number by 20 and divide the result by 100. For example, 20% of 200 is 40.

Divide the first number by the second number and multiply the result by 100.

Yes. Percentage calculations can help determine discount amounts and price changes.

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