74/82 as a percentage is 90.24%. This number shows how close the fraction is to a whole, and the rounding makes it easy to read.
The fraction 74/82 can be reduced to 37/41, which still represents the same value. Both forms give the same percentage when expressed as a part of 100.
In everyday use, saying 90.24% is quicker than writing the fraction. It helps when you compare scores, measurements, or any data that’s shown in percent form.