-17.87% is the change from 873 to 717
Calculation steps:
[( 717 - 873 ) ÷ 873] x 100 = -17.87%
Formula
Percentage change = [(717 - 873) / 873] x 100
Subtract the new number by the original number
717 - 873 = -156
-156 ÷ 873 = -0.17869415807560138
-0.17869415807560138 x 100 = -17.87%