3485% is the change from 20 to 717
Calculation steps:
[( 717 - 20 ) ÷ 20] x 100 = 3485%
Formula
Percentage change = [(717 - 20) / 20] x 100
Subtract the new number by the original number
717 - 20 = 697
697 ÷ 20 = 34.85
34.85 x 100 = 3485%
Example