How are these numbers calculated?

Big Games

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

Week of 5/10100.0*Relegated100.0*Average seed
Hansa Rostock 1 Leverkusen 2 Yes
-0.2
Energie Cottbus 2 Hamburger SV 0 +0.5
Hertha Berlin 1 Nürnberg 0 -0.5
Arminia Bielefeld 2 BVB 2 -0.4
MSV Duisburg 2 Bayern München 3 -0.3
+0.1
Schalke 1 Eintracht 0 -0.1
Week of 5/17100.0*Relegated100.0*Average seed
VfL Bochum 1 Hansa Rostock 2 +0.5
Eintracht 4 MSV Duisburg 2 +0.1
Points
Chance Will Win Championship