worldofcalcsPercentage Calculator
About Percentage Calculator
Quickly solve common percentage problems for discounts, taxes, profits, grades, and financial planning. Choose the calculation type, enter your numbers, and see instant results.
Features
- Multiple calculation types: X% of Y, X is what % of Y, and % change.
- Instant results that update as you type.
- Color-coded % change: green for increase, red for decrease.
- Clean, simple interface for fast inputs.
Common Uses
- Calculating discounts and sales prices.
- Tax calculations (GST Calculator).
- Loan interest (Loan EMI Calculator 💰).
- Business metrics and growth rates.
- Academic grade calculations.
- Financial planning and analysis.
How to Use
- Choose the type of percentage calculation.
- Enter your values in the input fields.
- View results instantly; use Reset to start a new calculation.
Ideal for students, professionals, and anyone needing accurate percentage calculations in seconds.
What is Percentage?
A percentage is a number expressed as a fraction of 100, denoted by the symbol %. It is one of the most commonly used mathematical concepts in daily life — from calculating discounts and tips to understanding interest rates, exam scores, and growth metrics. Understanding percentage calculations is fundamental for finance, business, academics, and data analysis.
Percentage Formulas
To find X% of Y: Result = (X/100) × Y. To find what percentage X is of Y: Percentage = (X/Y) × 100. For percentage change: Change% = ((New - Old) / Old) × 100. A positive result indicates increase, negative indicates decrease.
Worked Example
- What is 15% of 800?
- Result = (15/100) × 800 = 120
- 60 is what percent of 240?
- Percentage = (60/240) × 100 = 25%
- Price changed from ₹500 to ₹650. What's the % change?
- Change = ((650-500)/500) × 100 = 30% increase