Percentage Calculator
A suite of calculators for the most common percentage problems: find a percentage of a number, determine what percentage one number is of another, and calculate percentage increase or decrease.
Percentages are a fundamental part of everyday math, from calculating a tip at a restaurant to understanding financial returns. This suite of percentage calculators simplifies these common tasks, providing quick and accurate results for three key scenarios. All calculations are performed instantly in your browser.
This calculation finds a specific percentage of a given number. It's useful for tasks like calculating a discount or a sales tax.
Formula: (Percentage / 100) * Total Number
Example: To find 20% of 300, you calculate (20 / 100) * 300, which equals 60.
This calculation determines the percentage that one number represents of another. It's helpful for understanding proportions, like what percentage of your income goes to rent.
Formula: (Part / Whole) * 100
Example: To find what percentage 50 is of 200, you calculate (50 / 200) * 100, which equals 25%.
This calculation finds the percentage increase or decrease from an original number to a new number. It's widely used in finance to track investment performance or in business to measure growth.
Formula: ((New Value - Original Value) / Original Value) * 100
Example: To find the percentage change from 120 to 150, you calculate ((150 - 120) / 120) * 100, which is a 25% increase.