Hi @weird_guy,
So, ideally, you’d like to just see the top value based on your metric and then all others show up in the ‘other’ category?
For this, you can achieve in the format visual section. Just change your ‘Number of slices displayed’ to 1 and it will add everything but your top metric to the ‘other’ category.
.
To find the percent against total of others, you could try out this calculated field:
Let me know if you have any additional questions!