-9.99% is the change from 671 to 604
Calculation steps:
[( 604 - 671 ) ÷ 671] x 100 = -9.99%
Formula
Percentage change = [(604 - 671) / 671] x 100
Subtract the new number by the original number
604 - 671 = -67
-67 ÷ 671 = -0.09985096870342772
-0.09985096870342772 x 100 = -9.99%