100% is the change from 66 to 132
Calculation steps:
[( 132 - 66 ) ÷ 66] x 100 = 100%
Formula
Percentage change = [(132 - 66) / 66] x 100
Subtract the new number by the original number
132 - 66 = 66
66 ÷ 66 = 1
1 x 100 = 100%
Example