40%
Divide a given number by the whole number and multiply by 100, and you have a percentage. Example: Q: 8 is what percentage of 40? A: 8 divided by 40 times 100 = 20 ...so 8 is 20% of 40.
Expressed as a percentage, 8/20 x 100 = 40 percent.
Going from 8 to 20 is a 150% increase.
250%
1.6
8/40 = 2/10 = 20/100 = 20%
8 out of 40 = 2 out of 10 = 20 out of 100 = 20%
8 as a percent of 20 is: 8/20 times 100 = 40%
0.4 x 20 = 8
It is: 18/8 times 100 = 225%
It is: 2/8 times 100 = 25%
As a percentage: 8/25 times 100 = 32%