-18.71% is the change from 155 to 126
Calculation steps:
[( 126 - 155 ) ÷ 155] x 100 = -18.71%
Formula
Percentage change = [(126 - 155) / 155] x 100
Subtract the new number by the original number
126 - 155 = -29
-29 ÷ 155 = -0.1870967741935484
-0.1870967741935484 x 100 = -18.71%