The fraction 29/39 is equal to 74.36% when expressed as a percentage. This rounded value gives a quick sense of how large the fraction is compared to a whole.
The fraction itself cannot be reduced any further, so it stays as 29 over 39. It is a little more than three‑quarters of a whole, which is why the percentage is close to 75%.
Using the percentage makes it easy to compare 29/39 with other numbers in everyday situations, like grades, discounts, or statistics. The rounded figure 74.36% is precise enough for most practical uses.