The fraction 86⁄98 works out to 87.76 % when you write it as a percentage. This rounded figure shows how close the fraction is to being a whole number of one hundred.
If you look at the numbers, 86 is only a little bit less than 98, so the percentage is just under 90 %. The fraction can also be reduced to 43⁄49, but the percentage stays the same.
Knowing the percentage helps when you compare it to other values, like test scores or discounts. It’s a quick way to see that 86⁄98 is a fairly high proportion, almost nine‑tenths of the whole.