How do I calculate a percentage?

Enter the percentage and the number. For example, to find 20% of 150, enter 20 as the percentage and 150 as the number. The result (30) appears instantly.

How do I calculate percentage change?

Enter the original value and the new value. The calculator shows the percentage increase or decrease. For example, from 100 to 130 is a 30% increase.

What is the percentage formula?

Percentage = (Part / Whole) × 100. To find X% of Y: Result = (X / 100) × Y. Percentage change = ((New - Old) / |Old|) × 100.

Percentage Calculator

Calculate percentages instantly. What is X% of Y, percentage change, increase and decrease.

How to use: Enter values to calculate percentages, increases, decreases, or differences.

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Percentage (%)

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How to Calculate Percentages Online

Choose your calculation mode: 'What is X% of Y?' for basic percentage, 'X is what % of Y?' for finding the percentage, '% Change' for comparing two values, or 'Increase/Decrease by %' for adjusting values. Enter your numbers and get results instantly.

Common Percentage Calculations

Sales tax: multiply price by tax rate percentage. Discounts: subtract the percentage of the original price. Tips: multiply bill by tip percentage. Grade percentages: divide score by total possible points and multiply by 100.

Frequently Asked Questions

How do I calculate a percentage?: Enter the percentage and the number. For example, to find 20% of 150, enter 20 as the percentage and 150 as the number. The result (30) appears instantly.
How do I calculate percentage change?: Enter the original value and the new value. The calculator shows the percentage increase or decrease. For example, from 100 to 130 is a 30% increase.
What is the percentage formula?: Percentage = (Part / Whole) × 100. To find X% of Y: Result = (X / 100) × Y. Percentage change = ((New - Old) / |Old|) × 100.