-72.16% is the change from 668 to 186
Calculation steps:
[( 186 - 668 ) ÷ 668] x 100 = -72.16%
Formula
Percentage change = [(186 - 668) / 668] x 100
Subtract the new number by the original number
186 - 668 = -482
-482 ÷ 668 = -0.7215568862275449
-0.7215568862275449 x 100 = -72.16%