Percentage Calculator
Calculate percentages, percentage changes, and solve percentage problems instantly
What is X% of Y?
Quick Examples
What is a Percentage Calculator?
A percentage calculator is a versatile tool that helps you solve various percentage-related problems quickly and accurately. Whether you need to calculate discounts, tax amounts, grade percentages, or percentage changes in data, this calculator provides instant results for all common percentage calculations.
Percentages are fundamental in everyday life, from calculating tips at restaurants to understanding financial reports, analyzing statistics, or determining sale prices. Our percentage calculator simplifies these calculations, eliminating the need for manual computation and reducing errors.
Common Uses for Percentage Calculations
Shopping & Discounts
Calculate sale prices, discounts, and savings when shopping online or in stores
Finance & Investments
Track investment returns, calculate interest rates, and analyze financial growth
Education & Grades
Calculate test scores, grade percentages, and academic performance metrics
Business Analytics
Analyze sales growth, market share, conversion rates, and business KPIs
How to Use Each Calculator Type
What is X% of Y?
Use this calculator to find out what a certain percentage of a number is. Perfect for calculating discounts, tips, or portions.
Example: What is 20% of $150? Answer: $30
X is what percent of Y?
Use this to determine what percentage one number represents of another. Ideal for calculating grades, completion rates, or market share.
Example: 45 is what percent of 180? Answer: 25%
Percentage Change
Calculate the percentage increase or decrease between two values. Essential for tracking growth, price changes, or performance metrics.
Example: From 50 to 75 is a 50% increase
X of Y is what percent?
Similar to the second calculator but phrased differently. Helps you understand proportions and ratios as percentages.
Example: 30 of 120 is what percent? Answer: 25%
Frequently Asked Questions
How do you calculate a percentage?
To calculate a percentage, divide the part by the whole and multiply by 100. For example, to find what percentage 25 is of 100: (25 ÷ 100) × 100 = 25%.
How do I calculate percentage increase?
Subtract the original value from the new value, divide by the original value, and multiply by 100. Formula: ((New - Original) / Original) × 100.
What is 20% of 150?
20% of 150 is 30. To calculate: (20 ÷ 100) × 150 = 30. This is useful for calculating discounts, tips, or portions.
Is this calculator accurate for financial calculations?
Yes, this calculator uses standard mathematical formulas and provides accurate results to two decimal places. However, for critical financial decisions, always consult with a financial professional.
Can I use negative numbers in percentage calculations?
Yes, you can use negative numbers. The percentage change calculator is particularly useful for tracking decreases or losses using negative values.