How are these numbers calculated?

Big Games

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

Week of 4/23100.0*Relegated100.0*Average seed
Levadiakos 0 AEK 2 +21.6
-0.4
Iraklis 2 Panetolikos 1 +13.1
-0.2
Larissa 1 Xanthi 0 +5.5
-0.1
Veria 4 Asteras 3 -0.3
Week of 4/30100.0*Relegated100.0*Average seed
Panionios 1 Levadiakos 3 +0.3
Xanthi 3 Veria 0 +0.3
Points
Chance Will Make Playoffs