-95.6% is the change from 909 to 40
Calculation steps:
[( 40 - 909 ) ÷ 909] x 100 = -95.6%
Formula
Percentage change = [(40 - 909) / 909] x 100
Subtract the new number by the original number
40 - 909 = -869
-869 ÷ 909 = -0.9559955995599559
-0.9559955995599559 x 100 = -95.6%