-97.19% is the change from 285 to 8
Calculation steps:
[( 8 - 285 ) ÷ 285] x 100 = -97.19%
Formula
Percentage change = [(8 - 285) / 285] x 100
Subtract the new number by the original number
8 - 285 = -277
-277 ÷ 285 = -0.9719298245614035
-0.9719298245614035 x 100 = -97.19%