84.62% is the change from 39 to 72
Calculation steps:
[( 72 - 39 ) ÷ 39] x 100 = 84.62%
Formula
Percentage change = [(72 - 39) / 39] x 100
Subtract the new number by the original number
72 - 39 = 33
33 ÷ 39 = 0.8461538461538461
0.8461538461538461 x 100 = 84.62%