-9.76% is the change from 799 to 721
Calculation steps:
[( 721 - 799 ) ÷ 799] x 100 = -9.76%
Formula
Percentage change = [(721 - 799) / 799] x 100
Subtract the new number by the original number
721 - 799 = -78
-78 ÷ 799 = -0.09762202753441802
-0.09762202753441802 x 100 = -9.76%