How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 5/9100.0*Relegated to ProD2100.0*Average seed
Montpellier 33 Bayonne 16 -0.1
If winner is:HomeDrawAway
Lyon vs La Rochelle-0.2YesYes
If winner is:HomeDrawAway
Week of 5/16100.0*Relegated to ProD2100.0*Average seed
Oyonnax vs LyonYesYes-1.3
Castres vs BriveYesYes-0.5
Bordeaux-Bègles vs Bayonne-0.1YesYes

What If

Chances based on how well the Lyon finish out the regular season.   Explain

If finish:Chance inChance will finish regular season at seedRelegated
TPW-D-LplayoffsEuropean Rugby Champions Cup Berth1234567891011121314to ProD2Count

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs