4/56 as a percentage is 7.14%. This is the rounded value you get when you express the fraction as a part of a whole. It’s a small number, showing that 4 is only a tiny piece of 56.
The fraction 4/56 can be simplified by dividing both numbers by 4, which gives 1/14. Even in its simplest form, it still represents the same proportion of the whole, and when turned into a percent it stays at 7.14%.
Percentages like this are useful for quick comparisons. For example, if you had 56 items and only 4 of them were red, you could say that about 7.14% of the items are red. This makes it easy to understand the size of the part without dealing with the original numbers.