41.03% is the change from 39 to 55
Calculation steps:
[( 55 - 39 ) ÷ 39] x 100 = 41.03%
Formula
Percentage change = [(55 - 39) / 39] x 100
Subtract the new number by the original number
55 - 39 = 16
16 ÷ 39 = 0.41025641025641024
0.41025641025641024 x 100 = 41.03%