Percentage Calculator

Solve common percentage problems like finding a value, percentage change, or tip amounts

Calculate Percentage

What is

of

Percentage Increase/Decrease

to

Common Fraction to Percentage Conversions

FractionDecimalPercentage
1/40.2525%
1/20.5050%
3/40.7575%

Practical Uses for Percentages

Percentages are used daily in various fields. From **calculating tips** at a restaurant and **sales tax** at a store to analyzing **business growth** and **academic grades**, understanding the relationship between numbers and their percentages is a fundamental skill.

The Math

Percentage Value = (Value × Percentage) / 100

Percentage Change = ((New Value - Old Value) / Old Value) × 100

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