Percentage Calculator

Calculate percentages, percentage change, and percentage of a number quickly and accurately.

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Frequently Asked Questions

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

Choose 'X is what % of Y', enter the two numbers, and the calculator divides X by Y and multiplies by 100.

How is percentage change calculated?

Percentage change is calculated as (New Value − Old Value) ÷ Old Value × 100, showing the increase or decrease as a percentage.

Can this calculator handle negative numbers?

Yes, it works with negative numbers for all three calculation types.

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