-3.69% is the change from 839 to 808
Calculation steps:
[( 808 - 839 ) ÷ 839] x 100 = -3.69%
Formula
Percentage change = [(808 - 839) / 839] x 100
Subtract the new number by the original number
808 - 839 = -31
-31 ÷ 839 = -0.03694874851013111
-0.03694874851013111 x 100 = -3.69%