-86.19% is the change from 601 to 83
Calculation steps:
[( 83 - 601 ) ÷ 601] x 100 = -86.19%
Formula
Percentage change = [(83 - 601) / 601] x 100
Subtract the new number by the original number
83 - 601 = -518
-518 ÷ 601 = -0.8618968386023295
-0.8618968386023295 x 100 = -86.19%