57.58% is the change from 66 to 104
Calculation steps:
[( 104 - 66 ) ÷ 66] x 100 = 57.58%
Formula
Percentage change = [(104 - 66) / 66] x 100
Subtract the new number by the original number
104 - 66 = 38
38 ÷ 66 = 0.5757575757575758
0.5757575757575758 x 100 = 57.58%