74/79 as a percentage is 93.67%. This value tells you that the fraction is very close to a whole, just a little under 100 %.
The fraction 74/79 can also be thought of as 74 parts out of 79 equal parts. Because the numerator (74) is only five less than the denominator (79), the result is high, which is why the percentage is above 90 %.
When you see a number like 93.67 %, you know the original fraction is almost complete, but not quite. It’s a useful way to compare how large the fraction is relative to a full unit.