-86.17% is the change from 600 to 83
Calculation steps:
[( 83 - 600 ) ÷ 600] x 100 = -86.17%
Formula
Percentage change = [(83 - 600) / 600] x 100
Subtract the new number by the original number
83 - 600 = -517
-517 ÷ 600 = -0.8616666666666667
-0.8616666666666667 x 100 = -86.17%