2.39% is the change from 838 to 858
Calculation steps:
[( 858 - 838 ) ÷ 838] x 100 = 2.39%
Formula
Percentage change = [(858 - 838) / 838] x 100
Subtract the new number by the original number
858 - 838 = 20
20 ÷ 838 = 0.02386634844868735
0.02386634844868735 x 100 = 2.39%