-7.3% is the change from 671 to 622
Calculation steps:
[( 622 - 671 ) ÷ 671] x 100 = -7.3%
Formula
Percentage change = [(622 - 671) / 671] x 100
Subtract the new number by the original number
622 - 671 = -49
-49 ÷ 671 = -0.07302533532041729
-0.07302533532041729 x 100 = -7.3%