56.1% is the change from 41 to 64
Calculation steps:
[( 64 - 41 ) ÷ 41] x 100 = 56.1%
Formula
Percentage change = [(64 - 41) / 41] x 100
Subtract the new number by the original number
64 - 41 = 23
23 ÷ 41 = 0.5609756097560976
0.5609756097560976 x 100 = 56.1%