-6.12% is the change from 621 to 583
Calculation steps:
[( 583 - 621 ) ÷ 621] x 100 = -6.12%
Formula
Percentage change = [(583 - 621) / 621] x 100
Subtract the new number by the original number
583 - 621 = -38
-38 ÷ 621 = -0.061191626409017714
-0.061191626409017714 x 100 = -6.12%