Percentage Calculator
Three common percentage problems, solved instantly.
What is X% of Y?
What is the percentage change from A to B?
How to use this calculator
Enter a percent and a number to find 'X% of Y', or enter two numbers to find the percentage change between them.
What the result means
Percentage change tells you how much something moved relative to its starting value — the standard way to describe price moves, returns and growth.
Frequently asked questions
How do I calculate percentage change?
Subtract the start from the end, divide by the start, and multiply by 100.
Is a 50% drop the same as a 50% rise?
No — a 50% drop needs a 100% rise to recover, because they're calculated on different bases.