-5.01% is the change from 839 to 797
Calculation steps:
[( 797 - 839 ) ÷ 839] x 100 = -5.01%
Formula
Percentage change = [(797 - 839) / 839] x 100
Subtract the new number by the original number
797 - 839 = -42
-42 ÷ 839 = -0.050059594755661505
-0.050059594755661505 x 100 = -5.01%