How are these numbers calculated?

Big Games

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

Week of 9/8100.0*Chance in playoffs100.0*Average seed
Philadelphia II 5 Toronto II 3 +9.0
+0.4
Huntsville City 1 Atlanta II 2 +7.6
+0.1
Kansas City II 2 Chicago II 3 -7.4
-0.2
Columbus II 2 NYCFC II 5 -3.6
-0.3
Week of 9/15100.0*Chance in playoffs100.0*Average seed
Philadelphia II 2 Huntsville City 1 +19.6
+0.7
NYCFC II 4 Toronto II 3 (so)-1.0
-0.0
Atlanta II 4 Miami II 3 (so)+0.4
+0.1
Chicago II 1 Orlando II 2 (so)+0.1
Week of 9/24100.0*Chance in playoffs100.0*Average seed
New York II 1 Philadelphia II 3 In
+1.1
Miami II 2 NYCFC II 3 -17.2
-0.3
Huntsville City 2 Chicago II 3 (so)+16.2
+0.3
Points
Chance Will Make Playoffs