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
Montpellier 33 Bayonne 16 Out
No
+18.7
-1.1
Bordeaux-Bègles 26 Oyonnax 23 +1.1
+1.1
+1.7
-0.1
Toulouse 67 Brive 19 +0.2
+0.2
-3.6
+0.2
Toulon 37 Castres 21 +0.2
+0.2
-3.6
+0.2
If winner is:HomeDrawAway
Grenoble vs Clermont+2.9-1.3-2.8
-0.1+0.1+0.1
Lyon vs La Rochelle-2.3+2.0+2.1
+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
Bordeaux-Bègles vs Bayonne+23.6-15.9-22.0
-0.8+0.1+0.8
Grenoble vs Toulouse+2.9-1.4-2.8
-0.1+0.1+0.1
Castres vs Brive+0.2-4.4+0.2
+0.0+0.2-0.0
La Rochelle vs Racing Métro 92+2.1+2.0-2.3
-0.1-0.1+0.1

What If

Chances based on how well the Bayonne 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
462-0-0OutNo133334173No2,768,158
441-1-0OutNo529442100.4%558,424
421-0-1OutNo0113503635.55,529,665
0-2-0OutNo09514039.928,086
400-1-1OutNo5464948.7558,222
380-0-2OutNo8911Yes2,768,177
Total:OutNo389122739241.1%12,210,732
Games Above .500
Chance Will Make Playoffs