-48.39% is the change from 155 to 80
Calculation steps:
[( 80 - 155 ) ÷ 155] x 100 = -48.39%
Formula
Percentage change = [(80 - 155) / 155] x 100
Subtract the new number by the original number
80 - 155 = -75
-75 ÷ 155 = -0.4838709677419355
-0.4838709677419355 x 100 = -48.39%