-42.03% is the change from 671 to 389
Calculation steps:
[( 389 - 671 ) ÷ 671] x 100 = -42.03%
Formula
Percentage change = [(389 - 671) / 671] x 100
Subtract the new number by the original number
389 - 671 = -282
-282 ÷ 671 = -0.4202682563338301
-0.4202682563338301 x 100 = -42.03%