77.27% is the change from 66 to 117
Calculation steps:
[( 117 - 66 ) ÷ 66] x 100 = 77.27%
Formula
Percentage change = [(117 - 66) / 66] x 100
Subtract the new number by the original number
117 - 66 = 51
51 ÷ 66 = 0.7727272727272727
0.7727272727272727 x 100 = 77.27%