What is 20 Percent of 20? The Answer is 4

How to Calculate:

Unknown value 'Y'

100% / 20 = 20% / Y
100 / 20 = 20 / Y
Y ( 100 / 20 ) = 20
Y = 20 ( 20 / 100 )
Y = 4

Answer: 4

Reference: 20 Percent of 20