You can cross-multiply to convert fractions into percentages.
1 x
— = —
8 100
(100)1 = x(8)
100 = 8x
Isolate x by dividing both sides of the equation by 8.
100 8x
— = —
(8) (8)
100
— = x
8
Simplify.
12.5 = x
So one out of eight equals 12.5 out of a hundred, or
12.5 %
