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Percentage Calculator

Solve percentage problems, including percentage of a value, percentage increase/decrease, and proportion calculations.

1. Calculate percentage of a value

What is% of?

Result:30

2. Calculate percentage proportion

is what percent of?

Result:20%

3. Calculate percentage increase/decrease

What is the % change fromto?

Result:+50% Increase

How to Calculate & Formula Details

Mathematical Model FormulaPercentage = (Part / Whole) * 100. Percentage Increase = ((New Value - Original Value) / Original Value) * 100.

A percentage calculator solves everyday math problems involving percentages. Percentages are fractions with a denominator of 100, which are used to describe parts of a whole, growth rates, discounts, taxes, and financial returns.

Common Percentage Formulas

What is X% of Y? Formula: Value = (X / 100) * Y
X is what percent of Y? Formula: Percentage = (X / Y) * 100
Percentage change from X to Y: Formula: ((Y - X) / X) * 100

Frequently Asked Questions

How do you calculate percentage increase?

Subtract the original value from the new value, divide the result by the original value, and multiply by 100. For example, if a price goes from $20 to $25, the increase is ((25 - 20) / 20) * 100 = 25%.

How do you find what percent a number is of another?

Divide the part by the whole and multiply by 100. For example, to find what percent 15 is of 60, calculate (15 / 60) * 100 = 25%.

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