-2.28% is the change from 658 to 643
Calculation steps:
[( 643 - 658 ) ÷ 658] x 100 = -2.28%
Formula
Percentage change = [(643 - 658) / 658] x 100
Subtract the new number by the original number
643 - 658 = -15
-15 ÷ 658 = -0.022796352583586626
-0.022796352583586626 x 100 = -2.28%