Having been involved in the flying training pipeline in various guises during my career (selection, training and management) then I would strongly suggest that your statistics are made up. Either that or you need to explain the background behind them.
90% failure rate I might accept if that includes those individuals making their first application to a careers office who might fall at the very first hurdle. If it is from selection to Initial Officer Training then your figures are dubious and if they are from entering the start of flying training then they are simply wrong.