-80.18% is the change from 873 to 173
Calculation steps:
[( 173 - 873 ) ÷ 873] x 100 = -80.18%
Formula
Percentage change = [(173 - 873) / 873] x 100
Subtract the new number by the original number
173 - 873 = -700
-700 ÷ 873 = -0.8018327605956472
-0.8018327605956472 x 100 = -80.18%