Use this percentage plus calculator to add percentage or increase number by a percentage. It is especially use for calculating VAT-inclusive/ VAT-excluded price, cost markup price and gratuity-tip amount.
See also: Decrease number by a percentage
We simply multiply the number with (1+percentage) to increase it by that many percent:-
Percent-added value = N ×(1+p/100);
p is the percentage to be added to number N