How are these numbers calculated?

Big Games

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

Week of 12/12100.0*Chance in playoffs100.0*Average seed
LA Chargers 10 Minnesota 39 +10.7
+0.2
Dallas 44 LA Rams 21 +8.2
+0.1
San Francisco 22 Atlanta 29 +0.3
Green Bay 21 Chicago 13 +0.2
-0.4
Carolina 24 Seattle 30 -0.2
-0.0
New Orleans 34 Indianapolis 7 -0.0
Week of 12/22100.0*Chance in playoffs100.0*Average seed
San Francisco 34 LA Rams 31 In
Minnesota 10 Green Bay 23 -0.9
Seattle 13 Arizona 27 +0.2
Week of 12/29None
Games Above .500
Chance Will Make Playoffs