-5.5% is the change from 763 to 721
Calculation steps:
[( 721 - 763 ) ÷ 763] x 100 = -5.5%
Formula
Percentage change = [(721 - 763) / 763] x 100
Subtract the new number by the original number
721 - 763 = -42
-42 ÷ 763 = -0.05504587155963303
-0.05504587155963303 x 100 = -5.5%