How are these numbers calculated?

Big Games

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

Week of 4/29100.0*Chance in playoffs100.0*Average seed
Asteras 2 Apollon 1 -14.7
-0.1
Xanthi 1 Larissa 0 +11.9
+0.2
Platanias 1 Panionios 2 +0.3
Olympiakos 4 Panetolikos 0 +0.1
Week of 5/6100.0*Chance in playoffs100.0*Average seed
Panathinaikos 1 Xanthi 2 +29.3
+0.3
Panetolikos 0 Asteras 2 -22.3
-0.2
Points
Chance Will Make Playoffs