-95.2% is the change from 834 to 40
Calculation steps:
[( 40 - 834 ) ÷ 834] x 100 = -95.2%
Formula
Percentage change = [(40 - 834) / 834] x 100
Subtract the new number by the original number
40 - 834 = -794
-794 ÷ 834 = -0.9520383693045563
-0.9520383693045563 x 100 = -95.2%