-22.8% is the change from 671 to 518
Calculation steps:
[( 518 - 671 ) ÷ 671] x 100 = -22.8%
Formula
Percentage change = [(518 - 671) / 671] x 100
Subtract the new number by the original number
518 - 671 = -153
-153 ÷ 671 = -0.22801788375558868
-0.22801788375558868 x 100 = -22.8%