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.
Percentage Addition Calculator
Percentage Subtraction Calculator
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