Percentage Calculator
Percentages are one of the most commonly used mathematical concepts in everyday life. A percentage represents a fraction of 100 and is used to express proportions, compare values, and communicate changes in a way that is universally understood. From shopping discounts to tax rates, percentages are everywhere.
This calculator handles all common percentage operations: finding what percentage one number is of another, calculating a percentage of a value, and determining percentage increase or decrease between two numbers. Mastering percentage calculations is essential for budgeting, data analysis, academic work, and countless professional tasks.
How it works
Percentage = (Part / Whole) × 100. To find a percentage of a value: Result = Value × (Percentage / 100). Percentage change = ((New - Old) / Old) × 100.
Use cases
- Calculating discounts and sale prices while shopping
- Determining tax amounts and tip percentages
- Analyzing data trends and percentage changes over time
- Computing grades, scores, and performance metrics