Percentage Calculator

Simplify your percentage calculations with our versatile online tool. Perfect for students, professionals, and anyone needing quick, accurate results.

Choose Your Calculation:

Mastering Percentage Calculations: A Comprehensive Guide

1. Finding a Percentage of a Number

To calculate X% of Y:

Convert the percentage to a decimal (divide by 100)
Multiply the decimal by the number

Example: 15% of 80
15 ÷ 100 = 0.15
0.15 × 80 = 12

2. Calculating What Percent One Number is of Another

To find what percent X is of Y:

Divide X by Y
Multiply the result by 100

Example: What percent is 18 of 90?
18 ÷ 90 = 0.2
0.2 × 100 = 20%

3. Calculating Percentage Increase or Decrease

To calculate the percentage change:

(New Value - Original Value) ÷ Original Value
Multiply the result by 100

Example: Price changed from $50 to $60
(60 - 50) ÷ 50 = 0.2
0.2 × 100 = 20% increase

Practice Problems

Test your skills with these problems:

Calculate 35% of 240
What percent is 27 of 150?
A shirt's price dropped from $45 to $36. What's the percentage decrease?

35% of 240 = 0.35 × 240 = 84
27 is 18% of 150 (27 ÷ 150 = 0.18, 0.18 × 100 = 18%)
20% decrease ((36 - 45) ÷ 45 = -0.2, -0.2 × 100 = -20%)

Why Use Our Percentage Calculator?

Instant, accurate results for various percentage calculations
User-friendly interface suitable for all skill levels
Helps with financial planning, academic work, and everyday math
Free to use with no registration required

How to Use This Calculator

Select the type of calculation you need from the dropdown menu.
Enter the required numbers in the input fields.
Click "Calculate Now" to see your result instantly.
Use the result for your financial planning, homework, or any other purpose!

Common Uses for Percentage Calculations

Our advanced percentage calculator is a versatile tool that can help you in various scenarios:

Calculating discounts during shopping
Determining tax amounts
Analyzing business growth or decline
Computing grades and test scores
Planning personal finances and budgets

Boost Your Math Skills with Regular Practice

While our calculator provides quick answers, understanding percentage concepts is crucial. Regular practice with mental math can improve your overall numeracy skills. Use our calculator to check your work and build confidence in your calculations!