3490% is the change from 20 to 718
Calculation steps:
[( 718 - 20 ) ÷ 20] x 100 = 3490%
Formula
Percentage change = [(718 - 20) / 20] x 100
Subtract the new number by the original number
718 - 20 = 698
698 ÷ 20 = 34.9
34.9 x 100 = 3490%
Example