-16.79% is the change from 131 to 109
Calculation steps:
[( 109 - 131 ) ÷ 131] x 100 = -16.79%
Formula
Percentage change = [(109 - 131) / 131] x 100
Subtract the new number by the original number
109 - 131 = -22
-22 ÷ 131 = -0.16793893129770993
-0.16793893129770993 x 100 = -16.79%