It is important to closely check all the data that are given in the question. Those data are important for finding the result. Original = 45 New after decrease = 30 Quantity of decrease = 45 - 30 = 15 Percentage of decrease = (15/45) * 100 = 100/3 = 33.33% So we get 33.33% as the percentage of decrease. I hope the procedure is clear enough for you to understand. This procedure will help you to solve this type of problems in future with absolute ease.
