So percent means parts out of 100 so if you have 8250/9072 and you divide it so you get a decimal you get 0.90939... but that is over 1 0.9093/1 you want it over 100 exg x/100 so multiply by 1 or 100/100 (to convert bottom number to 100)
0.9093/1 times 100/100=90.9/100=90.9% answer is 90.9% (depends if teacher wants you to round or not)