Percentage calculator | Calculate Percentages Instantly
Use our Percentage Calculator for fast and accurate percentage calculations, including discounts, tips, and grade percentages. Get instant results for percentage increases and decreases.
What Is a Percentage Calculator?
A percentage calculator finds a percent of a number, what percent one number is of another, or the percentage increase or decrease between two values. For example, 20% of 80 is 16, and going from 80 to 100 is a 25% increase.
Calculate percentages, find what percent one number is of another, and compute percentage changes between values.
Finding a Percentage of a Number
Finding What Percent One Number is of Another
Calculating Percentage Change
What is a percentage?
In mathematics, a percentage is a number or ratio that represents a fraction of 100. It is denoted by the symbol "%". For example, 35% is equivalent to the decimal 0.35 or the fraction 35/100.
Percentage Formulas
Basic Formula
P × V1 = V2, where P is the percentage (in decimal form), V1 is the value to calculate the percentage of, and V2 is the result.
Calculator Tips
- Use tab to move between fields
- Enter numbers with or without decimals
- Results are rounded to 2 decimal places
- Percentage change can be positive or negative
- Press enter to calculate quickly
Frequently Asked Questions
A percentage represents a fraction of 100. It is one way to express a dimensionless relationship between two numbers.
To calculate X% of a number Y, multiply Y by (X/100).
To find what percent X is of Y, divide X by Y and multiply by 100.
Percentage change shows how much a value has increased or decreased relative to the original value, expressed as a percentage.
Percentages are used in many real-world situations including discounts, interest rates, statistics, and data analysis.
