Percentage Calculator
Work out percentages, percentage change, and what percent one number is of another — all in one place.
What is X% of Y?
15% of 200
30
X is what % of Y?
30 of 150
20%
% change from X to Y
Change
+25%
increase
Frequently asked questions
Percentage change = ((new value − old value) ÷ old value) × 100. A positive result is an increase, a negative result is a decrease.