-81.37% is the change from 671 to 125
Calculation steps:
[( 125 - 671 ) ÷ 671] x 100 = -81.37%
Formula
Percentage change = [(125 - 671) / 671] x 100
Subtract the new number by the original number
125 - 671 = -546
-546 ÷ 671 = -0.8137108792846498
-0.8137108792846498 x 100 = -81.37%