How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Wednesday100.0*Chance in playoffs100.0*Average seed
Buffalo 1 NY Islanders 5 +9.1
+0.0
Detroit 5 New Jersey 3 +3.7
+0.1
Columbus 6 Pittsburgh 3 +1.0
Washington 3 NY Rangers 4 (ot)-0.1
Thursday100.0*Chance in playoffs100.0*Average seed
Toronto 4 Arizona 2 +22.8
+1.1
Boston 2 Washington 3 (so)-0.2
Philadelphia 1 Florida 3 -0.1
Montreal 2 Tampa Bay 1 (ot)+0.1
Friday100.0*Chance in playoffs100.0*Average seed
Toronto 1 Colorado 3 Out
-1.5
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

Wednesday100.0*Lottery seed
Buffalo 1 NY Islanders 5 -0.2
Detroit 5 New Jersey 3 -0.2
Nashville 5 St Louis 3 -0.1
Washington 3 NY Rangers 4 (ot)+0.1
Arizona 3 Colorado 1 -0.1
Columbus 6 Pittsburgh 3 -0.1
Thursday100.0*Lottery seed
Toronto 4 Arizona 2 -1.7
Boston 2 Washington 3 (so)+0.2
Philadelphia 1 Florida 3 +0.1
Montreal 2 Tampa Bay 1 (ot)-0.1
Calgary 2 San Jose 3 (so)+0.0
Friday100.0*Lottery seed
Toronto 1 Colorado 3 +2.2
Pittsburgh 2 Carolina 4 -0.3