2315% is the change from 40 to 966
Calculation steps:
[( 966 - 40 ) ÷ 40] x 100 = 2315%
Formula
Percentage change = [(966 - 40) / 40] x 100
Subtract the new number by the original number
966 - 40 = 926
926 ÷ 40 = 23.15
23.15 x 100 = 2315%
Example