How are these numbers calculated?

Big Games

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

Week of 10/20100.0*Relegated100.0*Average seed
Häcken 1 Halmstad 3 -24.6
+0.6
Halmstad 1 Mjällby 0 -16.1
+0.3
Brommapojkarna 0 AIK 6 -5.6
+0.1
IFK Göteborg 0 Öster 0 +3.1
-0.1
Malmö 2 Brommapojkarna 1 -0.6
Week of 10/27100.0*Relegated100.0*Average seed
IFK Norrköping 1 Öster 1 +1.0
-0.0
Djurgården 1 Gefle 1 -0.1
Mjällby 2 IFK Göteborg 1 -0.0
Week of 11/3100.0*Relegated100.0*Average seed
Halmstad 2 Brommapojkarna 2 +22.6
-0.5
Points
Chance Will Win Championship