2157.5% is the change from 40 to 903
Calculation steps:
[( 903 - 40 ) ÷ 40] x 100 = 2157.5%
Formula
Percentage change = [(903 - 40) / 40] x 100
Subtract the new number by the original number
903 - 40 = 863
863 ÷ 40 = 21.575
21.575 x 100 = 2157.5%
Example