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*Chance in playoffs100.0*European Rugby Champions Cup Berth100.0*Relegated to ProD2100.0*Average seed
Toulon 37 Castres 21 Out
No
+15.2
-0.8
Montpellier 33 Bayonne 16 -0.4
-0.4
-7.9
+0.0
Bordeaux-Bègles 26 Oyonnax 23 +0.1
-0.1
Toulouse 67 Brive 19 -1.4
+0.1
If winner is:HomeDrawAway
Grenoble vs Clermont+1.4-0.2-1.4
-0.1+0.1+0.1
Lyon vs La Rochelle-1.2+1.0+1.1
+0.1-0.1-0.1
If winner is:HomeDrawAway
Week of 5/16100.0*Chance in playoffs100.0*European Rugby Champions Cup Berth100.0*Relegated to ProD2100.0*Average seed
Castres vs Brive-23.2+6.0+22.6
+0.9-0.2-0.9
Bordeaux-Bègles vs Bayonne-12.4+8.1+11.6
+0.2-0.1-0.2
La Rochelle vs Racing Métro 92+1.7+1.5-1.8
-0.1-0.1+0.1
Grenoble vs Toulouse+1.4-0.2-1.4
-0.1+0.1+0.1
Oyonnax vs Lyon-0.5-0.5+0.6

What If

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

100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seedRelegated
TPW-D-LplayoffsEuropean Rugby Champions Cup Berth1234567891011121314to ProD2Count
482-0-0OutNo1254925No2,767,512
461-1-0OutNo331461822.1%556,991
441-0-1OutNo0428541413.75,532,908
0-2-0OutNo083943109.627,777
420-1-1OutNo3326565.0556,767
400-0-2OutNo2071879.82,768,777
Total:OutNo0615213125227.4%12,210,732
Games Above .500
Chance Will Make Playoffs