3410% is the change from 20 to 702
Calculation steps:
[( 702 - 20 ) ÷ 20] x 100 = 3410%
Formula
Percentage change = [(702 - 20) / 20] x 100
Subtract the new number by the original number
702 - 20 = 682
682 ÷ 20 = 34.1
34.1 x 100 = 3410%
Example