Percentage Calculator
Calculate X% of a number, what percent one number is of another, and percentage increase or decrease. Free and instant.
What is X% of Y?
% of =
X is what percent of Y?
is what % of =
Percentage change from X to Y
From to =
How it works
Fill in any of the three calculators. X% of Y multiplies Y by X/100. X is what percent of Y divides X by Y and multiplies by 100. Percentage change is (new − old) ÷ |old| × 100.
Frequently asked questions
How do I calculate 20% of 50?
Multiply 50 by 0.20: the answer is 10.
Is percentage change the same as percentage difference?
No. Percentage change compares a new value to an original one; percentage difference compares two values relative to their average.