-86.39% is the change from 294 to 40
Calculation steps:
[( 40 - 294 ) ÷ 294] x 100 = -86.39%
Formula
Percentage change = [(40 - 294) / 294] x 100
Subtract the new number by the original number
40 - 294 = -254
-254 ÷ 294 = -0.8639455782312925
-0.8639455782312925 x 100 = -86.39%