Use our free Percentage Calculators to find percentages, percentage increase or decrease, and difference between numbers. Simple, accurate, and fast.
Percentage Calculators
Calculation History
📊 How to Use the Percentage Calculator (Free & Pro)
The Percentage Calculator helps you quickly and accurately calculate percentage values for any situation — whether you’re figuring out discounts, profit margins, tax, grades, or percentage changes.
It’s simple, instant, and perfect for students, business owners, accountants, and everyday users who deal with numbers.
- 💰 What is X% of Y? – Example: 20% of 150 = 30
- 📈 Percentage Increase/Decrease: Compare two values and find the percent change.
- 🎓 Grades & Scores: Find out your test or exam percentage.
- 🛍️ Discount Calculator: Calculate sale prices after applying discounts.
- 💼 Profit & Tax: Measure profit margins or tax percentages quickly.
💡 Perfect for quick math, finance, and academic use — all in your browser.
- Enter values: Fill in the two numbers you want to compare.
- Select calculation type: Choose between “Find % of number”, “Increase/Decrease”, or “Reverse percentage”.
- Click Calculate: Instantly view results on screen.
- Use Reset: To clear the input and start a new calculation.
Example: 50 is what % of 200? → 25%
- 📤 Save and export calculation results (CSV/PDF).
- 💾 View history of previous calculations.
- 📈 Visual charts for percentage comparison.
- ⚡ Bulk percentage calculations for datasets.
💎 Available in Percentage Calculator Pro.
- 🧾 25% of 80 = 20
- 📊 Increase from 50 to 75 = +50%
- 💰 200 after 10% discount = 180
- 🏦 Profit margin: (120−100)/100 = 20%
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Open ToolPercentage Calculators – Online % Tools for Increase, Decrease, and Difference
Use our free Percentage Calculators to quickly calculate percentage increase, decrease, and difference between two numbers. Whether you’re solving math problems, calculating discounts, or analyzing financial data, these online tools make percentage calculations easy and accurate.
What Is a Percentage?
A percentage represents a fraction of 100. It is used to compare proportions, express growth, or calculate discounts. For example, 25% means 25 out of every 100. The symbol % makes it easy to express ratios and changes clearly.
Types of Percentage Calculators
- Percentage of a Number: Find what percent one number is of another (e.g., 25% of 200).
- Percentage Increase: Calculate how much a number has increased in percentage terms.
- Percentage Decrease: Determine how much a value has reduced over time.
- Percentage Difference: Compare two values to find their relative difference in percentage.
Common Percentage Formulas
| Type | Formula | Example |
|---|---|---|
| Percentage of a Number | (Part ÷ Whole) × 100 | (25 ÷ 200) × 100 = 12.5% |
| Percentage Increase | ((New – Old) ÷ Old) × 100 | ((120 – 100) ÷ 100) × 100 = 20% |
| Percentage Decrease | ((Old – New) ÷ Old) × 100 | ((100 – 80) ÷ 100) × 100 = 20% |
| Percentage Difference | (|A – B| ÷ ((A + B)/2)) × 100 | (|100 – 80| ÷ 90) × 100 = 22.22% |
How to Use the Percentage Calculator
- Choose the calculation type (increase, decrease, difference, or percentage of a number).
- Enter the required numbers in the fields.
- Click “Calculate” to get the instant result.
- Use the result for shopping, finance, or academic calculations.
Examples of Common Percentage Calculations
- What is 30% of 150? → (30/100) × 150 = 45
- Price increased from $80 to $100 → 25% increase
- Marks decreased from 90 to 72 → 20% decrease
- Compare 120 and 150 → 22.2% difference
Real-Life Uses of Percentage Calculators
- Shopping: Calculate discounts and sales offers.
- Finance: Compute interest rates and growth percentages.
- Academics: Find marks and grades in percentage.
- Health: Track BMI, body fat, and fitness improvements.
- Business: Analyze profit, loss, and performance changes.
Frequently Asked Questions (FAQ)
1. What is the easiest way to calculate a percentage?
Divide the part by the whole and multiply by 100. Example: 25 is what percent of 200? (25 ÷ 200) × 100 = 12.5%
2. What’s the difference between percentage increase and difference?
Increase compares a change relative to the original value, while difference measures the relative gap between two numbers.
3. Can I calculate discounts using this tool?
Yes! Select “percentage decrease” and enter the original and discounted prices to find the exact discount rate.
4. Are these calculators accurate?
100% accurate — based on standard mathematical formulas for percentage computation.
Final Thoughts
The Percentage Calculators are handy tools for students, shoppers, and professionals. They make complex calculations simple — from finding discounts to analyzing data. Try the percentage increase, decrease, and difference calculators to save time and improve accuracy.
Useful Links:
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WHO – Mathematics Education Info