Percentage Calculator

Solve the three most common percentage questions in one place: what is A% of B, A is what percent of B, and the percentage change from A to B.

Result

Result —
In words —

How to use

  1. Choose what you want to find.
  2. Enter the values of A and B.
  3. The answer appears instantly, along with a sentence explaining it.

Formula

A% of B = A × B ÷ 100
A is what % of B = A ÷ B × 100
% change = (B − A) ÷ A × 100

Frequently asked questions

How do I calculate marks percentage?

Choose "A is what % of B", enter your marks as A and the total marks as B. For example, 450 out of 500 is 90%.

How do I find a percentage increase?

Choose "% change from A to B", enter the old value as A and the new value as B. A negative result means a decrease.

Can I use decimals?

Yes, both A and B can be decimals or negative numbers.

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