Percent change in a shrinking number (10% multiples)

This math topic provides practice on calculating the percent change when numbers decrease by specific multiples of 10%. The problems involve finding the percentage decrease from an original number to a new, smaller number. For example, students are asked to determine the percentage decrease when a number like 100 is reduced to 80, or 90 shrink to 63. Each problem gives multiple-choice answers, helping students understand how to compute and recognize percent decreases accurately. This is part of an introduction to understanding percentages.