Percentage Calculator
1 What is X% of Y?
Use this to calculate tips, discounts, tax, commission, and more.
% of
is
30
Working: 15 ÷ 100 × 200 = 30
2 X is what % of Y?
Use this to calculate grades, completion rates, or market share.
is what % of
?
15%
Working: 30 ÷ 200 × 100 = 15%
3 % Change from X to Y
Find the percentage increase or decrease between two values.
to
+25%
increase
Working: (100 − 80) ÷ 80 × 100 = +25%