Answer: 4%
Let x = percentage
In mathematics, is means equal to
16 is what percent of 400 can be translated mathematically as
16 = percentage x 400
since percentage = x
16 = x * 400
16 = 400x
Divide both sides by 400
16/400 = 400x/400
x = 16/400
x = 0.04
x = 0.04 * 100%
x = 4%
Therefore, 16 is 4% 0f 400