How do I calculate a percentage of a number?

Use the 'X% of Y' mode. Enter the percentage and the number, and the tool instantly shows the result. For example, 25% of 200 = 50.

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

Use the 'X is what % of Y' mode. Enter the value and the total, and the tool calculates the percentage. For example, 50 is 25% of 200.

Percentage change is calculated as ((New - Old) / |Old|) x 100. A positive result means an increase, and a negative result means a decrease.

Yes, the percentage calculator is completely free and runs entirely in your browser.

Calculate percentages, find percentage of a number, or compute percentage change.

What is X% of Y?

Percentage (%)

Number

Result

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Step 1

Choose a calculation mode: X% of Y, X is what % of Y, or % Change.

Step 2

Enter the required values in the input fields.

Step 3

See the result update in real time.

Step 4

Switch between modes for different types of percentage calculations.

Three calculation modes for all common percentage needs.

Real-time results as you type.

Percentage change shows increase or decrease.

Clean, simple interface for quick calculations.

Completely free with no sign-up required.

: Use the 'X% of Y' mode. Enter the percentage and the number, and the tool instantly shows the result. For example, 25% of 200 = 50.
: Use the 'X is what % of Y' mode. Enter the value and the total, and the tool calculates the percentage. For example, 50 is 25% of 200.
: Percentage change is calculated as ((New - Old) / |Old|) x 100. A positive result means an increase, and a negative result means a decrease.
: Yes, the percentage calculator is completely free and runs entirely in your browser.