-84.28% is the change from 668 to 105
Calculation steps:
[( 105 - 668 ) ÷ 668] x 100 = -84.28%
Formula
Percentage change = [(105 - 668) / 668] x 100
Subtract the new number by the original number
105 - 668 = -563
-563 ÷ 668 = -0.842814371257485
-0.842814371257485 x 100 = -84.28%