Percentage Calculator
Three quick percentage tools: a percentage of a number, one number as a percentage of another, and percentage change.
Percentage tools
What is % of ?
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is what % of ?
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Change from to ?
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Worth remembering
Losses and gains are not symmetric: a 50% loss needs a 100% gain to break even.
Frequently asked questions
How do I calculate a percentage increase?
Use the third row of this calculator — enter the old value and the new value, and it shows the increase or decrease instantly.