3260% is the change from 20 to 672
Calculation steps:
[( 672 - 20 ) ÷ 20] x 100 = 3260%
Formula
Percentage change = [(672 - 20) / 20] x 100
Subtract the new number by the original number
672 - 20 = 652
652 ÷ 20 = 32.6
32.6 x 100 = 3260%
Example