-2.8% is the change from 749 to 728
Calculation steps:
[( 728 - 749 ) ÷ 749] x 100 = -2.8%
Formula
Percentage change = [(728 - 749) / 749] x 100
Subtract the new number by the original number
728 - 749 = -21
-21 ÷ 749 = -0.028037383177570093
-0.028037383177570093 x 100 = -2.8%