-50.53% is the change from 659 to 326
Calculation steps:
[( 326 - 659 ) ÷ 659] x 100 = -50.53%
Formula
Percentage change = [(326 - 659) / 659] x 100
Subtract the new number by the original number
326 - 659 = -333
-333 ÷ 659 = -0.5053110773899848
-0.5053110773899848 x 100 = -50.53%