Calculate percentages, find what percent one number is of another, or find a number given a percentage
The Percentage Calculator is a versatile tool that helps you perform various percentage-related calculations quickly and accurately. This calculator offers three main functions:
Calculate what a given percentage of a number is. For example, find what 25% of 200 equals.
P% × X = Y
where P is percentage, X is the number, and Y is the result
Calculate the percentage increase or decrease between two values. For example, find the percentage change from 100 to 125.
((New Value - Original Value) ÷ Original Value) × 100 = % Change
Find what percentage one number is of another. For example, find what percentage 25 is of 100.
(X ÷ Y) × 100 = P%
where X is the part, Y is the whole, and P is the percentage
Calculate sale prices, discounts, and final costs after tax.
Example: A $80 item is on sale for 25% off. The discount amount is $20, and the sale price is $60.
Calculate profit margins, interest rates, growth rates, and investment returns.
Example: If an investment grows from $1,000 to $1,200, that's a 20% return.
Calculate grade percentages, test scores, and academic performance metrics.
Example: Scoring 45 points out of 50 possible points is equivalent to 90%.
Track weight change percentages, body fat percentages, and nutritional compositions.
Example: If you lose 5 pounds from an initial weight of 160 pounds, that's a 3.13% decrease.
A percentage is a number expressed as a fraction of 100. The word percent comes from the Latin "per centum," meaning "by the hundred." When we say 25%, we mean 25 out of 100, or 1/4 of the whole.
Percentages are useful for comparing values relative to each other, especially when the absolute values might be very different. They provide a standardized way to express proportions, changes, and relationships between numbers.