48/74 as a percentage is 64.86%. This is the rounded result you get when you change the fraction into a percent.
The fraction 48/74 can be simplified by dividing both numbers by 2, giving 24/37. Even though the numbers are smaller, the value stays the same, so the percentage remains 64.86%.
Knowing the percentage helps when you need to compare parts of a whole, like in surveys or budgets. It tells you that about two‑thirds of the total is represented by the 48 out of 74.