-82.12% is the change from 671 to 120
Calculation steps:
[( 120 - 671 ) ÷ 671] x 100 = -82.12%
Formula
Percentage change = [(120 - 671) / 671] x 100
Subtract the new number by the original number
120 - 671 = -551
-551 ÷ 671 = -0.8211624441132638
-0.8211624441132638 x 100 = -82.12%