How do I calculate a percentage of a number?

To find a percentage of a number, multiply the number by the percentage and divide by 100. For example, 25% of 200 = (25 × 200) ÷ 100 = 50. Alternatively, convert the percentage to a decimal (25% = 0.25) and multiply: 0.25 × 200 = 50.

What's the difference between percentage increase and percentage points?

Percentage increase is relative to the original value, while percentage points measure absolute difference between percentages. If something goes from 10% to 15%, that's a 50% increase but only a 5 percentage point increase.

How do I calculate percentage change?

Percentage change = ((New Value - Old Value) ÷ Old Value) × 100. If the result is positive, it's an increase; if negative, it's a decrease. For example, going from 80 to 100 is a 25% increase: ((100-80) ÷ 80) × 100 = 25%.

Can percentages be greater than 100%?

Yes! Percentages over 100% indicate that something is more than the whole or original amount. For example, if sales doubled, that would be a 100% increase, and if they tripled, it would be a 200% increase.

Percentage Calculator – Calculate Percentages, Discounts, & Changes

Calculate percentages, percentage changes, discounts, and more with our free online percentage calculator. Quick and accurate results.

Percentage Calculator – Calculate Percentages, Discounts, & Changes

Calculate percentages, percentage changes, discounts, and more with our free online percentage calculator. Quick and accurate results.

First Value*

Enter the first value

Second Value*

Enter the second value

Operation*

Choose the type of percentage calculation

📊

Enter values to see percentage calculation

Understanding Percentages

Percentages are a way to express a number as a fraction of 100. The word "percent" literally means "per hundred," making percentages a universal way to compare proportions, express changes, and communicate relative values across different contexts.

Common Percentage Calculations

Types of percentage calculations:

Finding a percentage of a number (e.g., 25% of 200 = 50)
Finding what percentage one number is of another (e.g., 50 is 25% of 200)
Calculating percentage increase or decrease (e.g., from 100 to 120 is a 20% increase)
Finding the original number before a percentage change
Calculating percentage points difference between two percentages

Percentage Formulas

Essential percentage formulas:

Percentage of a number: (Percentage ÷ 100) × Number
What percent: (Part ÷ Whole) × 100
Percentage change: ((New Value - Old Value) ÷ Old Value) × 100
Percentage increase: ((Increase) ÷ Original) × 100
Percentage decrease: ((Decrease) ÷ Original) × 100

How to Use This Calculator

Follow these simple steps to get accurate results:

Enter your first value
Enter your second value
Enter your operation
Click the "Calculate" button to see your results
Review the detailed breakdown and explanation

Why Use Our Percentage Calculator – Calculate Percentages, Discounts, & Changes?

100% free and no registration required
Instant, accurate calculations with professional formulas
Mobile-friendly design that works on any device
Privacy-focused - your data never leaves your browser
Educational content to help you understand the results

Frequently Asked Questions

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