-16.84% is the change from 867 to 721
Calculation steps:
[( 721 - 867 ) ÷ 867] x 100 = -16.84%
Formula
Percentage change = [(721 - 867) / 867] x 100
Subtract the new number by the original number
721 - 867 = -146
-146 ÷ 867 = -0.16839677047289503
-0.16839677047289503 x 100 = -16.84%