79/89 as a percentage is 88.76%. This value tells you how close the fraction is to a whole number, with 100 % representing a perfect whole.
The fraction 79/89 is a bit less than 1, which means its percentage will be just under 100 %. When you see 88.76%, you know that 79 is about 89 % of 89, but a little lower.
Because the result is rounded to two decimal places, the actual decimal might be a tiny bit different, but for most everyday uses 88.76% is precise enough. This simple conversion makes it easy to compare the fraction with other percentages you might encounter.