-5.19% is the change from 135 to 128
Calculation steps:
[( 128 - 135 ) ÷ 135] x 100 = -5.19%
Formula
Percentage change = [(128 - 135) / 135] x 100
Subtract the new number by the original number
128 - 135 = -7
-7 ÷ 135 = -0.05185185185185185
-0.05185185185185185 x 100 = -5.19%