0.32% is the change from 621 to 623
Calculation steps:
[( 623 - 621 ) ÷ 621] x 100 = 0.32%
Formula
Percentage change = [(623 - 621) / 621] x 100
Subtract the new number by the original number
623 - 621 = 2
2 ÷ 621 = 0.00322061191626409
0.00322061191626409 x 100 = 0.32%