-80.3% is the change from 873 to 172
Calculation steps:
[( 172 - 873 ) ÷ 873] x 100 = -80.3%
Formula
Percentage change = [(172 - 873) / 873] x 100
Subtract the new number by the original number
172 - 873 = -701
-701 ÷ 873 = -0.8029782359679267
-0.8029782359679267 x 100 = -80.3%