2257.5% is the change from 40 to 943
Calculation steps:
[( 943 - 40 ) ÷ 40] x 100 = 2257.5%
Formula
Percentage change = [(943 - 40) / 40] x 100
Subtract the new number by the original number
943 - 40 = 903
903 ÷ 40 = 22.575
22.575 x 100 = 2257.5%
Example