Percentage Calculator

Calculate percentages, find what percentage one number is of another, increase or decrease values by a percentage, and calculate percentage change.

What is X% of Y?

Percentage (%)

Number

X is what percentage of Y?

X (Part)

Y (Whole)

Increase or decrease a number by a percentage.

Original Value

Percentage (%)

Operation

What is the percentage change from the old value to the new value?

Old Value

New Value

Result

Result 0

X% of Y
Result = (X x 100) / Y

X is what % of Y?
Percentage = (X / Y) x 100

Percentage Increase
New Value = Original / (1 + Percentage / 100)

Percentage Decrease
New Value = Original / (1 - Percentage / 100)

Percentage Change
((New - Old) / |Old|) x 100