The fraction 78/88 works out to 88.64% when expressed as a percentage. This figure is rounded to two decimal places, so you can use it for quick estimates or comparisons.
If you simplify the fraction, 78 divided by 2 gives 39 and 88 divided by 2 gives 44, so the reduced form is 39/44. Both forms represent the same value, just written differently.
Seeing the percentage makes it easy to understand how close the fraction is to a whole. An 88.64% rating is fairly high, indicating that 78 out of 88 parts are present.