Percentage Calculator

Calculate percentages, percentage changes, and percentage differences between values.

What is % of

Result

is 25% of 100

Formula: (25 ÷ 100) × 100 = 25

Original Value

New Value

25%

Percentage increase from 100 to 125

Formula: ((125 - 100) ÷ 100) × 100 = 25%

Value 1

Value 2

40%

Percentage difference between 100 and 150

Formula: (|100 - 150| ÷ ((100 + 150) ÷ 2)) × 100 = 40%

Part Value

Whole Value

25%

25 is 25% of 100

Formula: (25 ÷ 100) × 100 = 25%

Percentages are useful for comparing proportions. A 25% increase means the value has grown by one quarter of its original amount.