How are these numbers calculated?

Big Games

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

Week of 5/2100.0*Chance wins title100.0*Promoted to Ligue 1100.0*Average seed
Brest 0 Caen 1 +0.4
+12.6
+0.4
Troyes 0 Metz 1 No
Caen 6 Bastia 1 +0.2
+16.8
+0.5
Metz 1 Tours 1 -0.0
Nancy 3 Istres 1 -7.3
-0.1
Niort 1 Auxerre 0 -5.1
-0.1
Laval 1 Nancy 0 +4.9
+0.1
Istres 1 Lens 6 -4.5
-0.2
Créteil 1 Niort 1 +1.5
+0.0
Lens 0 Angers 0 +1.0
+0.1
Nîmes 1 Brest 1 +0.4
Angers 2 Nîmes 3 +0.3
Week of 5/9100.0*Chance wins title100.0*Promoted to Ligue 1100.0*Average seed
Caen 1 Tours 3 -3.5
-0.2
Nancy 3 Angers 1 -1.7
Niort 1 Bastia 1 +0.9
Lens 0 Brest 1 +0.6
+0.2
If winner is:HomeDrawAway
Week of 5/16100.0*Chance wins title100.0*Promoted to Ligue 1100.0*Average seed
Dijon vs Caen-6.0YesYes
-0.3-0.0+0.3
Auxerre vs NancyYesYes-6.0
+0.1+0.1-0.1
Bastia vs LensYes-1.0-2.4
+0.3+0.1-0.4

What If

Chances based on how well Caen finishes out the regular season.   Explain

100100100100100100100100100100100100100100100100100100100100
If finish:ChancePromoted toChance will finish season at seedDown to
TPW-D-Lwins titleLigue 11234567891011121314151617181920NationalCount
661-0-0NoYes100No7,169,696,326
640-1-0NoYes6535No6,036,385,780
630-0-1No90.7%44479No7,169,587,294
Total:No96.7%70273No20,375,669,400
Points
Chance Will Win Championship