26.55% is the change from 663 to 839
Calculation steps:
[( 839 - 663 ) ÷ 663] x 100 = 26.55%
Formula
Percentage change = [(839 - 663) / 663] x 100
Subtract the new number by the original number
839 - 663 = 176
176 ÷ 663 = 0.2654600301659125
0.2654600301659125 x 100 = 26.55%