-6.12% is the change from 768 to 721
Calculation steps:
[( 721 - 768 ) ÷ 768] x 100 = -6.12%
Formula
Percentage change = [(721 - 768) / 768] x 100
Subtract the new number by the original number
721 - 768 = -47
-47 ÷ 768 = -0.061197916666666664
-0.061197916666666664 x 100 = -6.12%