-74.22% is the change from 671 to 173
Calculation steps:
[( 173 - 671 ) ÷ 671] x 100 = -74.22%
Formula
Percentage change = [(173 - 671) / 671] x 100
Subtract the new number by the original number
173 - 671 = -498
-498 ÷ 671 = -0.7421758569299552
-0.7421758569299552 x 100 = -74.22%