Lot of good posts here, figured Id add one thing that hasnt been mentioned yet.
Its possible (and Id even say likely) that you arent actually really losing any strength. Your gonna have bad days. Youre talking about failing with 95ish percent of your max, theres plenty of days when 95% of my max is not in the cards. For me personally on bench, about 90% of my max is the most I can guarantee Ill be able to get on any given day.
So, look over the advice offered in this thread, look over some programs, and move forward, dont get down about this, its completely normal.