-70.88% is the change from 285 to 83
Calculation steps:
[( 83 - 285 ) ÷ 285] x 100 = -70.88%
Formula
Percentage change = [(83 - 285) / 285] x 100
Subtract the new number by the original number
83 - 285 = -202
-202 ÷ 285 = -0.7087719298245614
-0.7087719298245614 x 100 = -70.88%