Explain how to write 7/8 as a rate per 100

So , we need 7/8 as a rate per 100

So we need it in a way  x/100

So 7/8, we need to make the denominator 100 and then multiply the same number used to make the denominator 100 with the numerator

7/8= 7*12.5/ 8* 12.5
     = 87.5 / 100