-47.55% is the change from 326 to 171
Calculation steps:
[( 171 - 326 ) ÷ 326] x 100 = -47.55%
Formula
Percentage change = [(171 - 326) / 326] x 100
Subtract the new number by the original number
171 - 326 = -155
-155 ÷ 326 = -0.4754601226993865
-0.4754601226993865 x 100 = -47.55%