Percentage Calculator
Calculate percentages, percentage changes, and values from percentages with this easy-to-use tool
Result:
<percentage>% of <value> = ...
Example
To find 15% of 200: Enter 15 in the percentage field and 200 in the value field. The result is 30.
Formula: Percentage × Value ÷ 100 = Result
Understanding Percentages
A percentage is a number expressed as a fraction of 100. It is often denoted using the percent sign, "%". Percentages are used to express how large or small one quantity is relative to another quantity.
Basic Percentage Calculations
To find a percentage of a value, multiply the value by the percentage divided by 100. For example, to find 15% of 200, calculate 200 × (15 ÷ 100) = 30. To express one value as a percentage of another, divide the first value by the second value and multiply by 100. For example, to express 30 as a percentage of 200, calculate (30 ÷ 200) × 100 = 15%.
Percentage Change
Percentage change is used to describe the change in a value over time. It is calculated as the difference between the new value and the original value, divided by the original value, and multiplied by 100. A positive percentage change indicates an increase, while a negative percentage change indicates a decrease.
Applications of Percentages
Percentages are used in many areas of everyday life. In finance, percentages are used to calculate interest rates, discounts, and taxes. In statistics, percentages are used to describe proportions and distributions. In business, percentages are used to analyze growth, market share, and profit margins.