-73.05% is the change from 668 to 180
Calculation steps:
[( 180 - 668 ) ÷ 668] x 100 = -73.05%
Formula
Percentage change = [(180 - 668) / 668] x 100
Subtract the new number by the original number
180 - 668 = -488
-488 ÷ 668 = -0.7305389221556886
-0.7305389221556886 x 100 = -73.05%