-20.61% is the change from 165 to 131
Calculation steps:
[( 131 - 165 ) ÷ 165] x 100 = -20.61%
Formula
Percentage change = [(131 - 165) / 165] x 100
Subtract the new number by the original number
131 - 165 = -34
-34 ÷ 165 = -0.20606060606060606
-0.20606060606060606 x 100 = -20.61%