25.64% is the change from 39 to 49
Calculation steps:
[( 49 - 39 ) ÷ 39] x 100 = 25.64%
Formula
Percentage change = [(49 - 39) / 39] x 100
Subtract the new number by the original number
49 - 39 = 10
10 ÷ 39 = 0.2564102564102564
0.2564102564102564 x 100 = 25.64%