-69.82% is the change from 285 to 86
Calculation steps:
[( 86 - 285 ) ÷ 285] x 100 = -69.82%
Formula
Percentage change = [(86 - 285) / 285] x 100
Subtract the new number by the original number
86 - 285 = -199
-199 ÷ 285 = -0.6982456140350877
-0.6982456140350877 x 100 = -69.82%