-26.32% is the change from 171 to 126
Calculation steps:
[( 126 - 171 ) ÷ 171] x 100 = -26.32%
Formula
Percentage change = [(126 - 171) / 171] x 100
Subtract the new number by the original number
126 - 171 = -45
-45 ÷ 171 = -0.2631578947368421
-0.2631578947368421 x 100 = -26.32%