3440% is the change from 20 to 708
Calculation steps:
[( 708 - 20 ) ÷ 20] x 100 = 3440%
Formula
Percentage change = [(708 - 20) / 20] x 100
Subtract the new number by the original number
708 - 20 = 688
688 ÷ 20 = 34.4
34.4 x 100 = 3440%
Example