The increment rate is added to the number 100 and the result is divided by 100. When the result is multiplied by the normal price, an increased price is obtained. For example, if there is a 10% increase in the price of a good whose sales price is USD 500, the new price will be determined as 500 x (100 + 10) / 100 = 500 x 1.1 = USD 550.