1572.5% is the change from 40 to 669
Calculation steps:
[( 669 - 40 ) ÷ 40] x 100 = 1572.5%
Formula
Percentage change = [(669 - 40) / 40] x 100
Subtract the new number by the original number
669 - 40 = 629
629 ÷ 40 = 15.725
15.725 x 100 = 1572.5%
Example