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Percentage Calculator

Compute percent change, percent of, and ratios instantly.

How to use

  1. Enter your values in the fields above.
  2. Press Calculate to see your result instantly.
  3. Use the Share button to copy a link to your result.

About this calculator

This is a general-purpose tool for the handful of percentage questions that come up constantly: finding what a certain percent of a number is, working out what percentage one number represents of another, and calculating the percentage increase or decrease between two values. Each mode rearranges the same basic part-over-whole relationship to solve for whichever piece is missing.

It gets used for everything from splitting a bill and checking a discount to grading a test, tracking a change in body weight, or comparing this year's numbers to last year's in a small business. Because the underlying math is identical across so many everyday situations, having one calculator that covers all the common variants saves reaching for a different formula each time.

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