Percentage Calculator
Three different percentage calculations — find a percentage, find what percentage, and calculate percentage change.
① What is X% of Y?
%
of
=
–
② X is what % of Y?
is what % of
=
–
③ Percentage Change
From
to
=
–
④ Find original value (value after percentage change)
New value
after
%
=
–
Percentage Formula Guide
- X% of Y = (X / 100) × Y
- X is what % of Y = (X / Y) × 100
- % change = ((New − Old) / |Old|) × 100
- Original value = New Value / (1 ± change/100)