The fraction 64/81 is equal to 79.01% when converted to a percentage and rounded to two decimal places. This percentage represents how much of 81 is made up by 64. It's a bit more than three-quarters but not quite four-fifths of the whole.
In everyday situations, you might come across this fraction or percentage when dealing with things like test scores, sales figures, or even in cooking measurements. For instance, if you scored 64 out of 81 on a test, you'd have achieved about 79% correct. Or if a store sold 64 items out of a stock of 81, they'd have sold approximately 79% of their inventory.