Percentage Calculator
Calculate percentages, discounts, tips, markup, and percentage changes for various financial and mathematical needs.
About Percentage Calculations
Basic Percentage Concepts
- • Percentage means "per hundred" (% = /100)
- • To find X% of Y: (X/100) × Y
- • To find what % X is of Y: (X/Y) × 100
- • Percentage change: ((New - Old)/Old) × 100
Discount Calculations
- • Discount amount = Original price × (Discount %/100)
- • Sale price = Original price - Discount amount
- • Savings percentage helps compare deals
- • Multiple discounts: Apply sequentially, not additively
Tip Calculations
- • Standard tips: 15-20% for good service
- • Tip amount = Bill total × (Tip %/100)
- • Total amount = Bill + Tip amount
- • Split bills: Divide total by number of people
Business Applications
- • Markup: Added to cost to determine selling price
- • Margin: Profit as percentage of selling price
- • Growth rates and performance metrics
- • Tax calculations and financial analysis