-79.84% is the change from 853 to 172
Calculation steps:
[( 172 - 853 ) ÷ 853] x 100 = -79.84%
Formula
Percentage change = [(172 - 853) / 853] x 100
Subtract the new number by the original number
172 - 853 = -681
-681 ÷ 853 = -0.798358733880422
-0.798358733880422 x 100 = -79.84%