Calculate percentages, percentage increases and decreases quickly. Change the numbers and instantly explore different scenarios.
Find a percentage of a number or calculate the percentage change between two values.
20% of 500 is 100.
Select an example to instantly explore a common percentage calculation.
A percentage expresses a number as a fraction of 100. For example, 25% means 25 out of every 100.
Percentages help you understand discounts, salary changes, exam scores, business growth, price changes, investment returns and many other everyday decisions.
This calculator performs mathematical calculations based on the values entered. Always verify important financial, business or other decisions using the relevant source information.
Multiply the number by the percentage expressed as a decimal. For example, 20% of 500 is 500 × 0.20 = 100.
Subtract the original value from the new value, divide the difference by the original value and multiply by 100.
A percentage can describe a portion of a whole, while percentage change describes how much a value has increased or decreased relative to its original value.