63/77 as a percentage is 81.82%. This rounded value gives you a quick sense of how large the fraction is compared to a whole.
The fraction 63/77 can be reduced by dividing both numbers by 7, which makes it 9/11. Even in this simpler form, it still represents the same proportion of a whole, just with smaller numbers.
Knowing the percentage is handy for everyday situations—like figuring out test scores, discounts, or any case where you need a clear, easy-to‑read figure instead of a fraction.