-95.2% is the change from 833 to 40
Calculation steps:
[( 40 - 833 ) ÷ 833] x 100 = -95.2%
Formula
Percentage change = [(40 - 833) / 833] x 100
Subtract the new number by the original number
40 - 833 = -793
-793 ÷ 833 = -0.9519807923169268
-0.9519807923169268 x 100 = -95.2%