-86.02% is the change from 601 to 84
Calculation steps:
[( 84 - 601 ) ÷ 601] x 100 = -86.02%
Formula
Percentage change = [(84 - 601) / 601] x 100
Subtract the new number by the original number
84 - 601 = -517
-517 ÷ 601 = -0.8602329450915142
-0.8602329450915142 x 100 = -86.02%