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*Relegated to Fédérale 1100.0*Average seed
Narbonne 36 Tarbes 23 -16.6
+0.7
Bourgoin 14 Montauban 20 -9.4
+0.1
Massy 50 Dax 13 -5.2
+0.0
Albi 34 Carcassonne 22 -0.1
+0.1
Week of 11/29100.0*Relegated to Fédérale 1100.0*Average seed
Agen 22 Dax 17 -7.4
+0.2
Tarbes 26 Massy 7 +7.1
+0.0
Colomiers 24 Bourgoin 17 -6.5
+0.1
Béziers 16 Carcassonne 12 +0.1
Week of 12/7100.0*Relegated to Fédérale 1100.0*Average seed
Narbonne 7 Biarritz 20 +20.0
-1.7
Games Above .500
Chance Will Win Championship