Question

convert to a percent 7
would 700% be correct?

Answer 1

To convert a number into percentage, just get the denominator as 100 and then write the numerator(also attaching the percent sign)

Answer 2

so my answer wasn't correct?

Answer 3

to convert a decimal number or a fraction to a percentage, you just need to multiply it by 100.
e.g.
7 = 7 * 100 = 700%
0.5 = 0.5 * 100 = 50%
3/4 = 3/4 * 100 = 75%

you had asked the same question before: http://openstudy.com/updates/4fcd40a7e4b0c6963ad8374e