77/84 as a percentage is 91.67%. This tells you the fraction is just a little short of a whole.
The fraction 77/84 can be reduced to 11/12, which is a familiar way to see its size. Seeing it as 11 parts out of 12 makes it easy to compare with other fractions.
In real life, a result of 91.67% shows a high level of completeness. It’s like scoring 91.67 out of 100 on a test or reaching 91.67% of a project target.