Percentage Calculator

Provide any two values and click Calculate to get the third value. Works with percentages, values and results.

Solve P × V₁ = V₂

Leave the field you want to calculate empty.

Percentage P (%)

Value V1

Result V2

Common phrases

What is % of ?

Is what % of ?

is % of what?

Percentage Difference & Change

Percentage Difference: Value 1 Value 2

Percentage Change: Initial Final

How this works

The basic formula is P × V₁ = V₂, where P is percent in decimal form (for example 0.15 for 15%). This page accepts percentage as percent (15) and converts internally.

Calculate	Formula
P	P = (V₂ / V₁) × 100
V₁	V₁ = V₂ / (P/100)
V₂	V₂ = (P/100) × V₁

Examples

If P = 15% and V₁ = 200 → V₂ = 30

If X = 30 and Y = 200 → X is 15% of Y

About Percentage Calculations

A Percentage Calculator helps you quickly calculate percentages, percentage increases, percentage decreases, percentage differences, and percentage changes. Percentages are commonly used in finance, shopping discounts, statistics, business reports, and everyday calculations.

All In One Calculator provides multiple percentage tools in one place, making it easy to find percentages, determine what percent one value is of another, and compare values using percentage difference and percentage change formulas.

Common Percentage Formulas

Percentage = (Part ÷ Whole) × 100
Percentage Change = ((New Value − Old Value) ÷ Old Value) × 100
Percentage Difference = (Difference ÷ Average) × 100

Benefits of Using a Percentage Calculator

A Percentage Calculator saves time, reduces calculation errors, and helps with financial planning, sales discounts, tax calculations, investment returns, exam scores, and data analysis.

Frequently Asked Questions

What is a percentage?

A percentage is a way of expressing a number as a fraction of 100. For example, 25% means 25 out of 100.

How do I calculate percentage increase?

Percentage increase is calculated by subtracting the old value from the new value, dividing the result by the old value, and multiplying by 100.

How do I calculate percentage decrease?

Percentage decrease is calculated by subtracting the new value from the old value, dividing the result by the old value, and multiplying by 100.

What is percentage difference?

Percentage difference compares two values by dividing the absolute difference by the average of the two values, then multiplying by 100.

Can I use this calculator for discounts?

Yes. You can use this Percentage Calculator to calculate shopping discounts, sale prices, tax percentages, tips, profit margins, and other everyday percentage problems.

Is this Percentage Calculator free?

Yes. The Percentage Calculator is completely free to use on desktop, tablet, and mobile devices.

This calculator is part of our Math Calculators collection.