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*Average seed
Mont-de-Marsan 32 Béziers 18 -5.8
-1.3
Bourgoin 14 Montauban 20 -0.5
-0.2
Albi 34 Carcassonne 22 -0.5
-0.1
Aurillac 20 Colomiers 13 -0.2
-0.0
Biarritz 42 Agen 18 +0.1
+0.0
Pau 22 Perpignan 19 +0.1
+0.1
Week of 11/29100.0*Promoted to Top 14100.0*Average seed
Perpignan 15 Aurillac 15 No
-0.4
Montauban 22 Pau 24 +0.3
+0.3
Béziers 16 Carcassonne 12 +0.2
+1.0
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*Average seed
Narbonne 7 Biarritz 20 -0.5
Games Above .500
Chance Will Win Championship