-5.62% is the change from 676 to 638
Calculation steps:
[( 638 - 676 ) ÷ 676] x 100 = -5.62%
Formula
Percentage change = [(638 - 676) / 676] x 100
Subtract the new number by the original number
638 - 676 = -38
-38 ÷ 676 = -0.05621301775147929
-0.05621301775147929 x 100 = -5.62%