-38.93% is the change from 131 to 80
Calculation steps:
[( 80 - 131 ) ÷ 131] x 100 = -38.93%
Formula
Percentage change = [(80 - 131) / 131] x 100
Subtract the new number by the original number
80 - 131 = -51
-51 ÷ 131 = -0.3893129770992366
-0.3893129770992366 x 100 = -38.93%