% Percentage Calculator
Three ways to calculate percentages — all instant, no button needed.
1 What is X% of Y?
What is
%
of
?
Result
—
2 X is what % of Y?
is what % of
?
Result
—
3 Percentage change from X to Y
From
to
% Change
—
Formulas
X% of Y: result = (X / 100) × Y
X is what % of Y: result = (X / Y) × 100
% change from X to Y: result = ((Y − X) / |X|) × 100 — positive means increase, negative means decrease.