9.4% is the change from 117 to 128
Calculation steps:
[( 128 - 117 ) ÷ 117] x 100 = 9.4%
Formula
Percentage change = [(128 - 117) / 117] x 100
Subtract the new number by the original number
128 - 117 = 11
11 ÷ 117 = 0.09401709401709402
0.09401709401709402 x 100 = 9.4%