Work out what X% of a number is, what percentage one number is of another, and the percentage increase or decrease between two values — each with the working shown.
Getting started
Pick the type of percentage question you need to answer.
Enter your two values — the result appears instantly as you type.
Read the formula shown beneath the answer to check the reasoning.
Why it helps
Covers all four common percentage questions in one place instead of four separate tools.
Shows the formula alongside the answer, so you can verify it or learn the method.
Handles percentage increase and decrease correctly, including the direction of change.
In practice
Calculating a tip, a commission or a tax amount from a total.
Working out how much a price has risen or fallen between two periods.
Converting a test score into a percentage mark.
Everything people ask most about the percentage calculator, answered plainly.
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