-49.69% is the change from 326 to 164
Calculation steps:
[( 164 - 326 ) ÷ 326] x 100 = -49.69%
Formula
Percentage change = [(164 - 326) / 326] x 100
Subtract the new number by the original number
164 - 326 = -162
-162 ÷ 326 = -0.49693251533742333
-0.49693251533742333 x 100 = -49.69%