-5.05% is the change from 654 to 621
Calculation steps:
[( 621 - 654 ) ÷ 654] x 100 = -5.05%
Formula
Percentage change = [(621 - 654) / 654] x 100
Subtract the new number by the original number
621 - 654 = -33
-33 ÷ 654 = -0.05045871559633028
-0.05045871559633028 x 100 = -5.05%