-5.34% is the change from 674 to 638
Calculation steps:
[( 638 - 674 ) ÷ 674] x 100 = -5.34%
Formula
Percentage change = [(638 - 674) / 674] x 100
Subtract the new number by the original number
638 - 674 = -36
-36 ÷ 674 = -0.05341246290801187
-0.05341246290801187 x 100 = -5.34%