-95.4% is the change from 869 to 40
Calculation steps:
[( 40 - 869 ) ÷ 869] x 100 = -95.4%
Formula
Percentage change = [(40 - 869) / 869] x 100
Subtract the new number by the original number
40 - 869 = -829
-829 ÷ 869 = -0.953970080552359
-0.953970080552359 x 100 = -95.4%