3550% is the change from 20 to 730
Calculation steps:
[( 730 - 20 ) ÷ 20] x 100 = 3550%
Formula
Percentage change = [(730 - 20) / 20] x 100
Subtract the new number by the original number
730 - 20 = 710
710 ÷ 20 = 35.5
35.5 x 100 = 3550%
Example