-81.36% is the change from 853 to 159
Calculation steps:
[( 159 - 853 ) ÷ 853] x 100 = -81.36%
Formula
Percentage change = [(159 - 853) / 853] x 100
Subtract the new number by the original number
159 - 853 = -694
-694 ÷ 853 = -0.813599062133646
-0.813599062133646 x 100 = -81.36%