-84.51% is the change from 839 to 130
Calculation steps:
[( 130 - 839 ) ÷ 839] x 100 = -84.51%
Formula
Percentage change = [(130 - 839) / 839] x 100
Subtract the new number by the original number
130 - 839 = -709
-709 ÷ 839 = -0.8450536352800954
-0.8450536352800954 x 100 = -84.51%