-17.41% is the change from 873 to 721
Calculation steps:
[( 721 - 873 ) ÷ 873] x 100 = -17.41%
Formula
Percentage change = [(721 - 873) / 873] x 100
Subtract the new number by the original number
721 - 873 = -152
-152 ÷ 873 = -0.17411225658648338
-0.17411225658648338 x 100 = -17.41%