-0.94% is the change from 638 to 632
Calculation steps:
[( 632 - 638 ) ÷ 638] x 100 = -0.94%
Formula
Percentage change = [(632 - 638) / 638] x 100
Subtract the new number by the original number
632 - 638 = -6
-6 ÷ 638 = -0.009404388714733543
-0.009404388714733543 x 100 = -0.94%