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Percentage Calculator

Work out X% of Y, what percent X is of Y, and the % change between two numbers.

Everything is worked out in your browser; nothing is sent anywhere or saved.

How to use

  1. Choose a mode: X% of Y, X is what % of Y, or % change.
  2. Enter the two numbers.
  3. Read the answer, which updates as you type.

About Percentage Calculator

Percentage Calculator handles the three questions people ask most: a share of a number, what share one number is of another, and how much a value rose or fell. Everything is worked out in your browser as you type; nothing is sent anywhere or saved.

FAQs

How is percentage change worked out?

(New − Old) ÷ Old × 100. A positive result is an increase, a negative one a decrease.

How do I find a discount price?

Use X% of Y to get the discount, then subtract it from the price.

How do I turn marks into a percentage?

Use 'X is what % of Y' with your marks as X and the total as Y.

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