How are these numbers calculated?

Big Games

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

Week of 11/22100.0*Promoted to Top 14100.0*Relegated to Fédérale 1100.0*Average seed
Albi 34 Carcassonne 22 No
+2.0
-0.6
Bourgoin 14 Montauban 20 -0.1
-5.0
+0.3
Biarritz 42 Agen 18 -0.0
Aurillac 20 Colomiers 13 -0.1
Narbonne 36 Tarbes 23 +1.0
-0.0
Massy 50 Dax 13 +0.9
-0.3
Mont-de-Marsan 32 Béziers 18 +0.1
Week of 11/29100.0*Promoted to Top 14100.0*Relegated to Fédérale 1100.0*Average seed
Béziers 16 Carcassonne 12 -0.7
Colomiers 24 Bourgoin 17 +0.2
Tarbes 26 Massy 7 +0.1
Agen 22 Dax 17 -0.1
Week of 12/7100.0*Promoted to Top 14100.0*Relegated to Fédérale 1100.0*Average seed
Narbonne 7 Biarritz 20 +0.5
Games Above .500
Chance Will Win Championship