-6.19% is the change from 662 to 621
Calculation steps:
[( 621 - 662 ) ÷ 662] x 100 = -6.19%
Formula
Percentage change = [(621 - 662) / 662] x 100
Subtract the new number by the original number
621 - 662 = -41
-41 ÷ 662 = -0.061933534743202415
-0.061933534743202415 x 100 = -6.19%