-17.14% is the change from 671 to 556
Calculation steps:
[( 556 - 671 ) ÷ 671] x 100 = -17.14%
Formula
Percentage change = [(556 - 671) / 671] x 100
Subtract the new number by the original number
556 - 671 = -115
-115 ÷ 671 = -0.17138599105812222
-0.17138599105812222 x 100 = -17.14%