Percentage Calculator

Percentage Calculator is a versatile free online tool that performs four common percentage calculations: finding what percentage one number is of another, calculating percentage of a number, computing percentage increase, and determining percentage decrease. Whether you're a student solving math problems, a business professional analyzing financial data, or simply calculating tips and discounts, this calculator provides instant accurate results. The calculator features four specialized modes to handle different percentage scenarios. Calculate what percentage a number represents (e.g., what percent is 25 of 200?), find a percentage of any number (e.g., what is 15% of 80?), determine percentage increase for growth calculations (e.g., increase 100 by 20%), and calculate percentage decrease for discount scenarios (e.g., decrease 50 by 10%). Common applications include calculating grade percentages for academic work, determining sales tax and discounts while shopping, analyzing business metrics like revenue growth or expense reduction, computing loan interest and payment amounts, finding tip amounts at restaurants, and tracking fitness progress through body weight or body fat percentage changes. All calculations process instantly in your browser with no data sent to servers. The tool displays clear formulas and step-by-step results, making it educational as well as practical. Works on all devices and browsers with no signup required.