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*Chance in playoffs100.0*Average seed
Fire 2 Crew 2 +0.1
Week of 10/16100.0*Chance in playoffs100.0*Average seed
Fire 2 Revolution 1 In
+0.1
Impact 2 Toronto FC 2 -1.7
-0.3
Union 0 Orlando 2 +1.4
+0.3
DC United 3 NYCFC 1 -1.3
-0.2
Week of 10/23100.0*Chance in playoffs100.0*Average seed
Revolution 3 Impact 0 -0.5
Union 0 Red Bulls 2 +0.2
Orlando 4 DC United 2 +0.1
Points
Chance Will Make Playoffs