There is literally no way to gauge that, but at the very least it is probably safe to assume that you'd have to do more than the max realm milestone.
This is the best banquet in history so no way to know
planning to reach around 50K points
Then you've got a good shot at 1%, but there's still no way to know. Unfortunately the banquet is too inconsistent of an event and this year is absurdly better than last, so any info from last year is irrelevant.
Yeah I dont think 50k points is anywhere close to 1%