💯 Percentage Calculator
Three essential percentage calculators in one place.
About Percentage Calculator
Percentages come up in almost every area of work and daily life — discounts, tax, grades, performance metrics, financial returns, salary increases. This tool gives you the three most common percentage calculations in one place: find what percentage X is of Y, calculate a percentage of a number, and calculate the percentage change between two values.
No mental math, no formula lookup. Just fill in the numbers you know and get the answer instantly. Simple, accurate, and always at hand when you need a quick calculation without opening a spreadsheet.
What is X% of Y?
result = (X / 100) × Y
What is
% of
?
X is what % of Y?
result = (X / Y) × 100
is what % of
?
Percentage Change
change = ((new − old) / |old|) × 100
From
to
Find original value (reverse %)
original = result / (percentage / 100)
is
% of what?
Calculation History
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