What is 9 is what percent of 12?

To find what percent one number is of another number, you can use the formula:

(First number / Second number) x 100

For this specific example, to find out what percent 9 is of 12, you would calculate it as follows:

(9 / 12) x 100 = 0.75 x 100 = 75%

Therefore, 9 is 75% of 12.