퍼센트 계산
X의 Y%는 얼마인가요? 예: 100의 20%는 얼마인가요?
비율 계산기
A는 B의 몇 퍼센트인가요? 예: 50은 200의 몇 퍼센트인가요?
성장률 계산기
A에서 B로의 퍼센트 변화? 증가율 또는 감소율 계산
Calculate what percentage of a number is
Calculate what is Y% of X, for example: What is 20% of 100?
Calculate what percentage one number is of another
Calculate what percentage A is of B, for example: What percentage is 50 of 200?
Calculate percentage change from one number to another
Calculate percentage change from A to B, including increases and decreases
Common Use Cases
Discount Calculation
Item costs $200, 20% discount: 200 × 20%
Tip Calculation
Restaurant bill $300, 15% tip: 300 × 15%
Tax Calculation
Product $200, 13% VAT: 200 × 13%
Grade Percentage
Student scored 85 out of 100: 85 ÷ 100 × 100%
Test Score Rate
Math test: 96 out of 120 points: 96 ÷ 120 × 100%
Course Completion
Completed 18 out of 24 lessons: 18 ÷ 24 × 100%
Sales Commission
Sales $10,000, 8% commission: 10000 × 8%
Investment ROI
Invested $5,000, profit $750: 750 ÷ 5000 × 100%
Performance Growth
Sales from $500K to $650K: Change from 500 to 650
Market Share
Company product 30% market share: Company sales ÷ Total sales × 100%
User Growth Rate
Users from 1,000 to 1,500: Change from 1000 to 1500
Conversion Rate
100 visitors, 12 purchases: 12 ÷ 100 × 100%
Percentage Calculation Formulas
Calculate Percentage of a Number
Formula: Result = Number × Percentage ÷ 100
Example: 20% of 100 = 100 × 20 ÷ 100 = 20
Calculate Proportion Percentage
Formula: Percentage = (Part ÷ Total) × 100%
Example: 50 of 200 = (50 ÷ 200) × 100% = 25%
Calculate Percentage Change
Formula: Change Rate = ((New - Original) ÷ Original) × 100%
Example: From 100 to 120 = ((120-100)÷100)×100% = 20%