Here is the artists' agreement (actors' agreement) for 0802 The Uprising. The percentage which actors get is 2/10th of a percent for each day on the original schedule.
It's a bit arbitrary to base on the schedule rather than actual days worked, of course, but I believe it's fair. The percentage for crew (like the editor and so forth) is a set rate. The total payouts (starting with the first dollar above $50,000) will equal about 30% of the revenue.
We've yet to actually pay out with one of our revenue sharing agreements. I'm really hoping this time we will. Chance did with his movie Hide and Creep. I'm really envious!