Percentage Calculator

Calculate Discounts, Profit/Loss, and Percentage Changes

Perform quick percentage calculations including discounts, markups, and percentage changes. Perfect for shopping, business, and academic use.

Basic Percentage Calculator

Calculate a percentage of a number

Real-World Examples

See how percentage calculations apply to everyday situations

Shopping Discount

Shopping

You found a jacket priced at $120 with a 25% discount.

Input: Original Price: $120, Discount: 25%
Result: Final Price: $90, You Save: $30

Investment Growth

Finance

Your stock portfolio grew from $5,000 to $6,500.

Input: Original: $5,000, New: $6,500
Result: Growth: 30%, Absolute Change: $1,500

Business Profit

Business

You bought items for $800 and sold them for $1,200.

Input: Cost Price: $800, Selling Price: $1,200
Result: Profit: $400, Profit Percentage: 50%

Grade Calculation

Education

You scored 85 out of 100 in an exam.

Input: Score: 85, Total: 100
Result: Percentage: 85%

Salary Increase

Career

Your salary increased from $50,000 to $55,000.

Input: Original: $50,000, New: $55,000
Result: Increase: 10%, Absolute Change: $5,000

Tax Calculation

Tax

Calculate 8% sales tax on a $250 purchase.

Input: Amount: $250, Tax Rate: 8%
Result: Tax Amount: $20, Total: $270

About Percentage Calculations

Basic Percentage

To find X% of Y: multiply Y by X, then divide by 100.

Percentage Change

Formula: ((New Value - Original Value) ÷ Original Value) × 100

Discount

Discounted Price = Original Price - (Original Price × Discount % ÷ 100)

Profit/Loss

Profit/Loss = Selling Price - Cost Price

Profit/Loss Percentage = (Profit/Loss ÷ Cost Price) × 100

What is a Percentage Calculator?

A percentage calculator is a versatile mathematical tool that helps you perform various percentage-related calculations quickly and accurately. Whether you‘re shopping for discounts, analyzing business profits, or calculating grade percentages, this tool simplifies complex mathematical operations into easy-to-use interfaces.

Common Use Cases

  • • Shopping discounts and sales
  • • Business profit and loss analysis
  • • Academic grade calculations
  • • Investment growth tracking
  • • Tax and tip calculations
  • • Market analysis and statistics

Key Features

  • • Multiple calculation modes
  • • Instant results with detailed breakdown
  • • No registration required
  • • Mobile-friendly interface
  • • Accurate to 2 decimal places
  • • Free to use unlimited times

Frequently Asked Questions

Tips for Percentage Calculations

Quick Mental Math Tips

  • 10%: Move decimal point one place left (10% of 250 = 25)
  • 25%: Divide by 4 (25% of 100 = 25)
  • 50%: Divide by 2 (50% of 80 = 40)
  • 1%: Move decimal point two places left (1% of 300 = 3)

Common Mistakes to Avoid

  • • Don‘t confuse percentage points with percentages
  • • Always check if you need the percentage OF or AS a percentage
  • • Remember that 50% off then 50% off ≠ 100% off
  • • Be careful with negative percentage changes