Final answer:
The answer is 88.88%.
Step-by-step explanation:
To find what percent 80 is of 90, we need to divide 80 by 90 and then multiply by 100.
This will give us the decimal equivalent of the percentage.
80 ÷ 90 = 0.8888 (rounded to four decimal places)
To convert this decimal to a percent, we multiply by 100.
0.8888 × 100
= 88.88%