Percentage Calculator
Percentage Calculator – Calculate Percentages, Increases & Decreases Instantly
Use this free online percentage calculator to quickly solve common percentage problems like “What is X% of Y?”, percentage increase, percentage decrease, and percent difference. Perfect for finance, business, shopping discounts, tax calculations, school math, and investment analysis.
What Is a Percentage?
A percentage (%) represents a number as a fraction of 100. It is commonly used to compare values, calculate discounts, determine tax amounts, measure growth rates, and analyze financial performance.
Basic Percentage Formula:
Percentage = (Part ÷ Whole) × 100
How to Use the Percentage Calculator
- Select the Calculation Type (e.g., What is X% of Y).
- Enter Value 1 (percentage or base value).
- Enter Value 2 (total or comparison value).
- Click Calculate.
- View your result instantly.
The calculator automatically applies the correct percentage formula based on the selected calculation type.
Common Percentage Calculations
1. What is X% of Y?
Formula: (X ÷ 100) × Y Example: What is 20% of 200? Answer: 40
2. Percentage Increase
Formula: ((New Value – Original Value) ÷ Original Value) × 100 Used to calculate salary growth, revenue growth, or investment returns.
3. Percentage Decrease
Formula: ((Original Value – New Value) ÷ Original Value) × 100 Commonly used for discounts, price reductions, and loss calculations.
Real-Life Use Cases
- 🛒 Calculate shopping discounts and sale prices
- 💰 Determine tax rates and VAT amounts
- 📈 Measure business profit margins
- 🏦 Analyze loan interest rates
- 📊 Track investment growth percentages
- 🎓 Solve school and college math problems
Frequently Asked Questions
How do you calculate a percentage?
Divide the part by the whole and multiply by 100 to get the percentage.
How do you calculate percentage increase?
Subtract the original value from the new value, divide by the original value, and multiply by 100.
How do you calculate percentage decrease?
Subtract the new value from the original value, divide by the original value, and multiply by 100.
Can I use this calculator for financial calculations?
Yes, this percentage calculator is useful for tax, profit margin, investment return, and interest rate calculations.
Is this percentage calculator free?
Yes, the tool is completely free and works directly in your browser.
Related Financial & Math Calculators
Solve Percentage Problems Instantly
Whether you're calculating discounts, taxes, profit margins, or growth rates, this percentage calculator gives you accurate results in seconds.
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