How are these numbers calculated?

Big Games

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

Week of 9/9100.0*Chance in playoffs100.0*Average seed
TDS 18 MM 19 +24.9
+2.1
HFH 7 ROW 6 -11.1
-0.5
Week of 9/16100.0*Chance in playoffs100.0*Average seed
MM 19 ROW 6 In
+3.1
TDS 18 HFH 7 +5.5
-0.1
LO 2 SMF 8 +0.0
SHOCK 14 RECK 4 +0.0
Games Above .500
Chance Will Make Playoffs