How are these numbers calculated?

Big Games

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

Week of 1/14100.0*Chance wins title100.0*Average seed
Hodson 3 LAGSB 0 +3.1
+1.3
Surf 0 Hodson 1 +2.3
+1.0
Kaufman 1 LAGSD 2 -1.9
-0.1
Kaufman 0 Navy 3 No
Legends 2 IE Surf 0 -1.0
-0.1
LAGSB 3 PDA 5 +0.8
+0.1
Demelo 2 LAGSB 0 -0.5
-0.1
Albion 2 LAGSD 4 -0.3
PDA 0 Legends 4 -0.1
Demelo 2 DMCV 2 -0.0
Week of 1/21100.0*Chance wins title100.0*Average seed
Hodson 1 Navy 2 -12.7
-1.0
Legends 3 Albion 0 -2.0
-0.2
Legends 2 DMCV 0 -1.3
+0.0
Navy 4 Albion 0 -1.0
-0.1
Albion 2 Demelo 4 -0.7
-0.1
PDA 1 Demelo 3 -0.5
-0.2
DMCV 1 LAGSD 0 +0.4
-0.1
Demelo 5 Surf 0 +0.4
-0.0
Surf 1 Kaufman 2 +0.0
Week of 1/29100.0*Chance wins title100.0*Average seed
LAGSB 3 LAGSD 1 +0.3
Points
Chance Will Win Championship