Choose Calculation Mode

📊

Basic Percentage

What is X% of Y?

25% of 200 = 50

🔄

Reverse Percentage

X is what % of Y?

50 is 25% of 200

📈

Percentage Change

% change from X to Y

100 to 125 = +25%

⬆️

Percentage Increase

Increase X by Y%

100 + 25% = 125

⬇️

Percentage Decrease

Decrease X by Y%

100 - 25% = 75

🎯

Find Total

If X is Y%, what's 100%?

50 is 25%, total = 200

Basic Percentage Calculator

Calculate what percentage of a number equals another number

What is % of ?

Reverse Percentage Calculator

Find what percentage one number is of another

is what % of ?

Percentage Change Calculator

Calculate the percentage change between two values

From to

Percentage Increase Calculator

Increase a number by a given percentage

Increase by %

Percentage Decrease Calculator

Decrease a number by a given percentage

Decrease by %

Find Total Calculator

Find the total if you know a part and its percentage

If is %, what is the total?

Common Percentage Calculations

Tips & Service

Bill Amount: $

Discounts & Sales

Original Price: $ Discount: %

Tax Calculator

Amount: $ Tax Rate: %

Calculation History

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How to Use

Select a Mode

Choose from 6 different percentage calculation modes depending on what you want to calculate.

Enter Values

Input your numbers and see instant results as you type. No need to click calculate!

View Results

See detailed results with explanations and step-by-step breakdowns.

Percentage Formulas

Basic: (P/100) × N = Result

Reverse: (Part/Whole) × 100 = %

Change: ((New-Old)/Old) × 100 = %

Increase: N + (N × P/100) = Result

Decrease: N - (N × P/100) = Result

Total: Part ÷ (P/100) = Whole

Quick Reference

10% = 0.1 = 1/10

25% = 0.25 = 1/4

33.33% = 0.3333 = 1/3

50% = 0.5 = 1/2

75% = 0.75 = 3/4