3225% is the change from 20 to 665
Calculation steps:
[( 665 - 20 ) ÷ 20] x 100 = 3225%
Formula
Percentage change = [(665 - 20) / 20] x 100
Subtract the new number by the original number
665 - 20 = 645
645 ÷ 20 = 32.25
32.25 x 100 = 3225%
Example