How are these numbers calculated?

Big Games

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

Week of 10/7100.0*Chance in playoffs100.0*Average seed
Houston 2 Sporting KC 1 -4.8
-0.2
Colorado 1 FC Dallas 1 -2.5
-0.1
Week of 10/15100.0*Chance in playoffs100.0*Average seed
Seattle 4 FC Dallas 0 -16.0
-0.4
Colorado 1 Real Salt Lake 0 +13.0
+0.2
Vancouver 1 San Jose 1 -5.2
-0.1
Sporting KC 0 Houston 0 -0.5
Week of 10/22100.0*Chance in playoffs100.0*Average seed
San Jose 3 Minnesota 2 Out
-0.3
FC Dallas 5 Los Angeles 1 +19.4
+0.4
Real Salt Lake 2 Sporting KC 1 -4.1
-0.2
Points
Chance Will Make Playoffs

Lottery

We are out of the playoffs. Here are the big games and what ifs for draft seeds.
Although it might be more fun to go down swinging.

Big Games

Week of 10/7100.0*Lottery seed
Houston 2 Sporting KC 1 +0.3
Colorado 1 FC Dallas 1 +0.2
NY Red Bulls 3 Vancouver 0 +0.1
Week of 10/15100.0*Lottery seed
Seattle 4 FC Dallas 0 +0.6
Colorado 1 Real Salt Lake 0 -0.2
Vancouver 1 San Jose 1 +0.1
Chicago 3 Philadelphia 2 -0.0
Toronto FC 1 Montreal 0 -0.0
Sporting KC 0 Houston 0 +0.0
Portland 4 DC United 0 +0.0
Week of 10/22100.0*Lottery seed
FC Dallas 5 Los Angeles 1 -0.5
San Jose 3 Minnesota 2 +0.3
Montreal 2 New England 3 +0.3
Real Salt Lake 2 Sporting KC 1 +0.3