-2.74% is the change from 839 to 816
Calculation steps:
[( 816 - 839 ) ÷ 839] x 100 = -2.74%
Formula
Percentage change = [(816 - 839) / 839] x 100
Subtract the new number by the original number
816 - 839 = -23
-23 ÷ 839 = -0.027413587604290822
-0.027413587604290822 x 100 = -2.74%