2292.5% is the change from 40 to 957
Calculation steps:
[( 957 - 40 ) ÷ 40] x 100 = 2292.5%
Formula
Percentage change = [(957 - 40) / 40] x 100
Subtract the new number by the original number
957 - 40 = 917
917 ÷ 40 = 22.925
22.925 x 100 = 2292.5%
Example