Percentage calculator

What is x% of y, x is what percent of y, and percent change.

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How to use Percentage calculator

Fill any of the three cards. Examples: 18% of 250, 40 is what percent of 200, or percent change from 80 to 100. Copy the result. Handy for discounts, grades, tips, and stats homework.

Three calculators people actually search: percentage of a number, reverse percentage, and percent increase/decrease. Results update as you type.

Also searched as percentage calculator, percent of, percent change. All processing for this tool happens in your tab unless labeled otherwise.

Questions

Percent change formula?

(new − old) / old × 100. A negative result is a decrease.

Rounding?

Shown to two decimal places by default; the raw value is available too.

VAT / tax?

Use Tip calculator or Compound interest for tax-like markups, or add tax as a percentage of here.

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