-86.81% is the change from 599 to 79
Calculation steps:
[( 79 - 599 ) ÷ 599] x 100 = -86.81%
Formula
Percentage change = [(79 - 599) / 599] x 100
Subtract the new number by the original number
79 - 599 = -520
-520 ÷ 599 = -0.8681135225375626
-0.8681135225375626 x 100 = -86.81%