-0.63% is the change from 632 to 628
Calculation steps:
[( 628 - 632 ) ÷ 632] x 100 = -0.63%
Formula
Percentage change = [(628 - 632) / 632] x 100
Subtract the new number by the original number
628 - 632 = -4
-4 ÷ 632 = -0.006329113924050633
-0.006329113924050633 x 100 = -0.63%