The key is to establishing the worst performing posts for any of your desired KPI's in Content Drilldown, is to head to the last page of results via the 'Last' button towards the footer of your page.
This quick tutorial clip below, demonstrates exactly how to zip straight to the worst posts.
Simply select the KPI you want to rank by in the top left hand corner
Your posts will then arrange in descending order from best through to worst
If you've got quite a few posts to sift through, you'll be given 'next' and 'last' page buttons, centrally at the footer of your page
Simply scroll down, hit last, and brace yourself for the worst performing posts for that KPI within the report date range set...
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