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Percentage Calculator
Every common percentage question, answered instantly — what X% of Y is, what percent one number is of another, the change between two numbers, and adding or subtracting a percent. Each one shows the formula so you can learn it, not just copy it.
What is X% of Y?
e.g. 15% of 200 — tips, discounts, commissions.
% of
= —
Formula: (X ÷ 100) × Y
X is what percent of Y?
e.g. 45 is what % of 180 — scores, shares, progress.
is what % of
= —
Formula: (X ÷ Y) × 100
Percentage change from X to Y
e.g. from 50 to 65 — price rises, growth, drops.
fromto
= —
Formula: ((Y − X) ÷ X) × 100
Add or subtract a percent
e.g. 200 plus 8% tax, or 80 minus 25% off.
%
= —
Formula: Y ± (Y × P ÷ 100)