2.86% is the change from 839 to 863
Calculation steps:
[( 863 - 839 ) ÷ 839] x 100 = 2.86%
Formula
Percentage change = [(863 - 839) / 839] x 100
Subtract the new number by the original number
863 - 839 = 24
24 ÷ 839 = 0.028605482717520857
0.028605482717520857 x 100 = 2.86%