-18.18% is the change from 165 to 135
Calculation steps:
[( 135 - 165 ) ÷ 165] x 100 = -18.18%
Formula
Percentage change = [(135 - 165) / 165] x 100
Subtract the new number by the original number
135 - 165 = -30
-30 ÷ 165 = -0.18181818181818182
-0.18181818181818182 x 100 = -18.18%