1457.5% is the change from 40 to 623
Calculation steps:
[( 623 - 40 ) ÷ 40] x 100 = 1457.5%
Formula
Percentage change = [(623 - 40) / 40] x 100
Subtract the new number by the original number
623 - 40 = 583
583 ÷ 40 = 14.575
14.575 x 100 = 1457.5%
Example