-57.23% is the change from 671 to 287
Calculation steps:
[( 287 - 671 ) ÷ 671] x 100 = -57.23%
Formula
Percentage change = [(287 - 671) / 671] x 100
Subtract the new number by the original number
287 - 671 = -384
-384 ÷ 671 = -0.5722801788375559
-0.5722801788375559 x 100 = -57.23%