420% is the change from 140 to 728
Calculation steps:
[( 728 - 140 ) ÷ 140] x 100 = 420%
Formula
Percentage change = [(728 - 140) / 140] x 100
Subtract the new number by the original number
728 - 140 = 588
588 ÷ 140 = 4.2
4.2 x 100 = 420%
Example