3/78 as a percentage is 3.85%. This tiny slice of a whole shows how a small number can be expressed in a way that’s easy to compare with other values.
The fraction 3/78 can be simplified to 1/26, but whether you write it as 3/78 or 1/26, the size of the part stays the same. It represents just a few parts out of a hundred, which is why the percentage is also low.
Percentages like this are handy in everyday situations—think of a discount of 3.85% on a price, or a test score where you only got 3.85% of the possible points. They let you see at a glance how small or large a piece is.
Because the number is rounded to two decimal places, you get a neat 3.85% that’s quick to read and use without extra digits getting in the way.