-99.68% is the change from 624 to 2
Calculation steps:
[( 2 - 624 ) ÷ 624] x 100 = -99.68%
Formula
Percentage change = [(2 - 624) / 624] x 100
Subtract the new number by the original number
2 - 624 = -622
-622 ÷ 624 = -0.9967948717948718
-0.9967948717948718 x 100 = -99.68%