-0.32% is the change from 624 to 622
Calculation steps:
[( 622 - 624 ) ÷ 624] x 100 = -0.32%
Formula
Percentage change = [(622 - 624) / 624] x 100
Subtract the new number by the original number
622 - 624 = -2
-2 ÷ 624 = -0.003205128205128205
-0.003205128205128205 x 100 = -0.32%