-95.27% is the change from 845 to 40
Calculation steps:
[( 40 - 845 ) ÷ 845] x 100 = -95.27%
Formula
Percentage change = [(40 - 845) / 845] x 100
Subtract the new number by the original number
40 - 845 = -805
-805 ÷ 845 = -0.9526627218934911
-0.9526627218934911 x 100 = -95.27%