I bought shares in Altaba and now I got liquidation for 75% of the share value (value per share dropped 75% day to day as result). Nobody knows when the remaining value will be liquidated but I find it unfair that I need to consider that 75% liquidation as dividend. Should I consider it as selling of 75% of my initial shares to calculate CGT on that? Then remaining 25% of my original purchase to be compared to the final liquidation value? Thank you so much for your opinion please...