-53.35% is the change from 671 to 313
Calculation steps:
[( 313 - 671 ) ÷ 671] x 100 = -53.35%
Formula
Percentage change = [(313 - 671) / 671] x 100
Subtract the new number by the original number
313 - 671 = -358
-358 ÷ 671 = -0.533532041728763
-0.533532041728763 x 100 = -53.35%