-7.15% is the change from 671 to 623
Calculation steps:
[( 623 - 671 ) ÷ 671] x 100 = -7.15%
Formula
Percentage change = [(623 - 671) / 671] x 100
Subtract the new number by the original number
623 - 671 = -48
-48 ÷ 671 = -0.07153502235469449
-0.07153502235469449 x 100 = -7.15%