54.55% is the change from 66 to 102
Calculation steps:
[( 102 - 66 ) ÷ 66] x 100 = 54.55%
Formula
Percentage change = [(102 - 66) / 66] x 100
Subtract the new number by the original number
102 - 66 = 36
36 ÷ 66 = 0.5454545454545454
0.5454545454545454 x 100 = 54.55%