1757.5% is the change from 40 to 743
Calculation steps:
[( 743 - 40 ) ÷ 40] x 100 = 1757.5%
Formula
Percentage change = [(743 - 40) / 40] x 100
Subtract the new number by the original number
743 - 40 = 703
703 ÷ 40 = 17.575
17.575 x 100 = 1757.5%
Example