-5.49% is the change from 638 to 603
Calculation steps:
[( 603 - 638 ) ÷ 638] x 100 = -5.49%
Formula
Percentage change = [(603 - 638) / 638] x 100
Subtract the new number by the original number
603 - 638 = -35
-35 ÷ 638 = -0.054858934169279
-0.054858934169279 x 100 = -5.49%