The fraction 51/64 is equal to 79.69% when converted to a percentage and rounded to two decimal places. This means that if you had 64 equal parts of something and took 51 of those parts, you'd have about 80% of the whole. It's a bit more than three-quarters but not quite four-fifths of the total.
In everyday situations, you might come across this fraction or percentage when dealing with things like test scores, progress bars, or even cooking measurements. For example, if you completed 51 out of 64 tasks on a to-do list, you could say you're about 80% done with your work. It's a handy way to express how much of something you have compared to the full amount.