Free online calculator for all kinds of percentage problems.
You can accomplish various standard calculations involving adding percentage or subtracting percentage from a number on this page; Use percentage minus calculator for retail markup pricing and savings on discount sales. Use percentage plus calculator for vat calculation and gratuity tipping.
Percent Add = N ×(1+p/100);
p is the percentage to be added to number N
Percent Subtract = N ×(1-p/100);
p is the percentage taken off from number N
Android app: Calculate percentage with this all-in-one calculator.