-52.91% is the change from 671 to 316
Calculation steps:
[( 316 - 671 ) ÷ 671] x 100 = -52.91%
Formula
Percentage change = [(316 - 671) / 671] x 100
Subtract the new number by the original number
316 - 671 = -355
-355 ÷ 671 = -0.5290611028315947
-0.5290611028315947 x 100 = -52.91%