-5.19% is the change from 674 to 639
Calculation steps:
[( 639 - 674 ) ÷ 674] x 100 = -5.19%
Formula
Percentage change = [(639 - 674) / 674] x 100
Subtract the new number by the original number
639 - 674 = -35
-35 ÷ 674 = -0.05192878338278932
-0.05192878338278932 x 100 = -5.19%