-49.82% is the change from 285 to 143
Calculation steps:
[( 143 - 285 ) ÷ 285] x 100 = -49.82%
Formula
Percentage change = [(143 - 285) / 285] x 100
Subtract the new number by the original number
143 - 285 = -142
-142 ÷ 285 = -0.4982456140350877
-0.4982456140350877 x 100 = -49.82%