How are these numbers calculated?

Big Games

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

Week of 10/12100.0*Supporters Shield100.0*Average seed
Rapids 2 Earthquakes 1 -0.4
Week of 10/16100.0*Supporters Shield100.0*Average seed
Portland 1 Rapids 0 +0.3
DC United 3 NYCFC 1 No
-0.2
FC Dallas 2 Seattle 1 No
Red Bulls 3 Crew 2 -0.2
Impact 2 Toronto FC 2 +0.1
Week of 10/23100.0*Supporters Shield100.0*Average seed
NYCFC 4 Crew 1 +0.3
Toronto FC 3 Fire 2 -0.2
Union 0 Red Bulls 2 -0.0
Points
Chance Will Make Playoffs