-38.15% is the change from 671 to 415
Calculation steps:
[( 415 - 671 ) ÷ 671] x 100 = -38.15%
Formula
Percentage change = [(415 - 671) / 671] x 100
Subtract the new number by the original number
415 - 671 = -256
-256 ÷ 671 = -0.38152011922503726
-0.38152011922503726 x 100 = -38.15%