1547.5% is the change from 40 to 659
Calculation steps:
[( 659 - 40 ) ÷ 40] x 100 = 1547.5%
Formula
Percentage change = [(659 - 40) / 40] x 100
Subtract the new number by the original number
659 - 40 = 619
619 ÷ 40 = 15.475
15.475 x 100 = 1547.5%
Example