-87.6% is the change from 839 to 104
Calculation steps:
[( 104 - 839 ) ÷ 839] x 100 = -87.6%
Formula
Percentage change = [(104 - 839) / 839] x 100
Subtract the new number by the original number
104 - 839 = -735
-735 ÷ 839 = -0.8760429082240763
-0.8760429082240763 x 100 = -87.6%