15.38% is the change from 117 to 135
Calculation steps:
[( 135 - 117 ) ÷ 117] x 100 = 15.38%
Formula
Percentage change = [(135 - 117) / 117] x 100
Subtract the new number by the original number
135 - 117 = 18
18 ÷ 117 = 0.15384615384615385
0.15384615384615385 x 100 = 15.38%