-73.03% is the change from 671 to 181
Calculation steps:
[( 181 - 671 ) ÷ 671] x 100 = -73.03%
Formula
Percentage change = [(181 - 671) / 671] x 100
Subtract the new number by the original number
181 - 671 = -490
-490 ÷ 671 = -0.7302533532041728
-0.7302533532041728 x 100 = -73.03%