-85.81% is the change from 606 to 86
Calculation steps:
[( 86 - 606 ) ÷ 606] x 100 = -85.81%
Formula
Percentage change = [(86 - 606) / 606] x 100
Subtract the new number by the original number
86 - 606 = -520
-520 ÷ 606 = -0.858085808580858
-0.858085808580858 x 100 = -85.81%