Excluding a category from sbs_posts

So if I want to show the sbs_posts count for a given category, I can use the shortcode with category name: [sbs_posts cat="~~Admin"].

If I want to show the sbs_posts count for everything except a given category … I’m unclear of what to do. It looks like it should be possible, but as the documentation drills down into wp_query functions, my head starts to spin.