-1.23% is the change from 730 to 721
Calculation steps:
[( 721 - 730 ) ÷ 730] x 100 = -1.23%
Formula
Percentage change = [(721 - 730) / 730] x 100
Subtract the new number by the original number
721 - 730 = -9
-9 ÷ 730 = -0.012328767123287671
-0.012328767123287671 x 100 = -1.23%