-3.74% is the change from 749 to 721
Calculation steps:
[( 721 - 749 ) ÷ 749] x 100 = -3.74%
Formula
Percentage change = [(721 - 749) / 749] x 100
Subtract the new number by the original number
721 - 749 = -28
-28 ÷ 749 = -0.037383177570093455
-0.037383177570093455 x 100 = -3.74%