-9.63% is the change from 135 to 122
Calculation steps:
[( 122 - 135 ) ÷ 135] x 100 = -9.63%
Formula
Percentage change = [(122 - 135) / 135] x 100
Subtract the new number by the original number
122 - 135 = -13
-13 ÷ 135 = -0.0962962962962963
-0.0962962962962963 x 100 = -9.63%