How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Sunday100.0*Chance in playoffs100.0*Average seed
Grenades 2 Broncos 4 -12.6
-0.6
Wildcats 5 Stingrays 4 (so)-6.3
-0.2
Rockies 4 Buzzards 1 -2.9
-0.1
Sundogs 4 Roadhogs 2 -0.2
-0.1
Leafs 2 Dragons 1 +0.1
Monday100.0*Chance in playoffs100.0*Average seed
Maniax 4 Grenades 3 -28.7
-0.5
Express 8 Rockies 3 +24.7
+0.3
TuesdayNone
Points
Chance Will Make Playoffs