Divide 20 % by 100 to get its decimal form.
Dividing 20 % by 100 equals 0.2.
Set up an equation as 0.2x = 8,
which means 20 %of x equals 8.
Solve the equation by dividing each side by 0.2.
Dividing 0.2 from each side results in x = 40. Eight is 20 % of 40.