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
Portland II 1 Houston II 3 Out
-0.6
Minnesota II 2 Austin II 1 (so)-0.6
Tacoma 3 San Jose II 2 +0.1
Vancouver II 0 St Louis II 1 +0.1
+0.2
Colorado II 2 Salt Lake II 0 +0.1
Week of 9/15100.0*Chance in playoffs100.0*Average seed
LAFC II 4 Portland II 0 -0.6
Houston II 1 North Texas 3 -0.3
Vancouver II 2 San Jose II 5 +0.3
Salt Lake II 0 Tacoma 3 +0.1
Week of 9/24100.0*Chance in playoffs100.0*Average seed
Portland II 2 Salt Lake II 1 +0.9
North Texas 3 Austin II 1 -0.6
Tacoma 4 Vancouver II 3 (so)+0.0
Points
Chance Will Make Playoffs