-83.7% is the change from 853 to 139
Calculation steps:
[( 139 - 853 ) ÷ 853] x 100 = -83.7%
Formula
Percentage change = [(139 - 853) / 853] x 100
Subtract the new number by the original number
139 - 853 = -714
-714 ÷ 853 = -0.8370457209847597
-0.8370457209847597 x 100 = -83.7%