73/77 as a percentage is 94.81%. This fraction is very close to a whole, meaning it represents a high proportion of whatever whole you’re measuring.
The fraction 73/77 can also be thought of as 73 parts out of 77 equal parts. Because the numerator is only four less than the denominator, the value is just a little under 1, which is why the percentage is near 100%.
In practical terms, if you had 77 items and you kept 73 of them, you’d have kept about 94.81% of the items. This kind of ratio shows up in things like test scores, success rates, or any situation where you compare a large portion to a total.