The fraction 81/100 is equal to 81.00% when expressed as a percentage. This means that if you have 81 out of 100 parts of something, you have 81 percent of the whole. It's a common fraction that comes up in various situations, from test scores to statistics.
You might see 81/100 or 81.00% used in different contexts. For example, a student who gets 81 questions right out of 100 on a test would score 81%. In business, if 81 out of 100 customers are satisfied with a product, the company could say they have an 81% satisfaction rate. This fraction and percentage are useful for comparing parts to wholes and understanding proportions in everyday life.