36/39 as a percentage is 92.31%. This number tells you how close the fraction is to a whole unit when expressed in percent form.
The fraction 36/39 can be reduced to 12/13, which is still a large portion of a whole. In everyday language, saying something is about 92 % means it’s almost complete, just a little shy of 100 %.
Knowing the percentage makes it easy to compare this value with other measurements, such as test scores or discount rates. It’s a quick way to see that 36 out of 39 is a very high proportion.