-87.72% is the change from 839 to 103
Calculation steps:
[( 103 - 839 ) ÷ 839] x 100 = -87.72%
Formula
Percentage change = [(103 - 839) / 839] x 100
Subtract the new number by the original number
103 - 839 = -736
-736 ÷ 839 = -0.8772348033373063
-0.8772348033373063 x 100 = -87.72%