-95.13% is the change from 800 to 39
Calculation steps:
[( 39 - 800 ) ÷ 800] x 100 = -95.13%
Formula
Percentage change = [(39 - 800) / 800] x 100
Subtract the new number by the original number
39 - 800 = -761
-761 ÷ 800 = -0.95125
-0.95125 x 100 = -95.13%