121.21% is the change from 66 to 146
Calculation steps:
[( 146 - 66 ) ÷ 66] x 100 = 121.21%
Formula
Percentage change = [(146 - 66) / 66] x 100
Subtract the new number by the original number
146 - 66 = 80
80 ÷ 66 = 1.2121212121212122
1.2121212121212122 x 100 = 121.21%