What is Percentage Calculator?
A Percentage Calculator is a versatile online tool that helps you perform all types of percentage calculations instantly. Whether you need to find what percentage one number is of another, calculate percentage increase or decrease, find the percentage of a number, or determine percentage change, this calculator does it all! Perfect for students solving math problems, shoppers comparing discounts, business professionals analyzing data, or anyone needing quick percentage calculations.
Formula
Percentage = (Value ÷ Total Value) × 100
Percentage of Number = (Percentage ÷ 100) × Number
Percentage Increase = ((New Value - Old Value) ÷ Old Value) × 100
Percentage Decrease = ((Old Value - New Value) ÷ Old Value) × 100
Benefits of Using Percentage Calculator
Multiple Calculation Types – Find %, % of number, % increase, % decrease
Instant Results – Get accurate answers in milliseconds
Step-by-Step Formulas – Learn how calculations work
Free & Unlimited – No registration, use as many times as needed
Student Friendly – Perfect for homework and exam preparation
Business Ready – Analyze profit margins, sales growth, discounts
Pro Tip: Remember: To convert a fraction to percentage, divide the numerator by denominator and multiply by 100. For example, 3/4 = 0.75 × 100 = 75%!
Frequently Asked Questions
To find X% of Y: Multiply the number by the percentage and divide by 100. Formula: (X ÷ 100) × Y. Example: 25% of 200 = (25 ÷ 100) × 200 = 0.25 × 200 = 50.
Percentage Increase = ((New Value - Old Value) ÷ Old Value) × 100. Example: Price increased from ₹100 to ₹150 = ((150-100) ÷ 100) × 100 = 50% increase.
Percentage Decrease = ((Old Value - New Value) ÷ Old Value) × 100. Example: Price dropped from ₹200 to ₹150 = ((200-150) ÷ 200) × 100 = 25% decrease.
To find what % X is of Y: (X ÷ Y) × 100. Example: What % is 30 of 150? = (30 ÷ 150) × 100 = 0.2 × 100 = 20%. So 30 is 20% of 150.
Divide the numerator by denominator and multiply by 100. Formula: (Numerator ÷ Denominator) × 100. Example: 3/5 = (3 ÷ 5) × 100 = 0.6 × 100 = 60%.
Percentage Change = ((Final Value - Initial Value) ÷ Initial Value) × 100. Positive result = increase, negative result = decrease. Example: Change from 80 to 100 = ((100-80) ÷ 80) × 100 = 25% increase.