How are these numbers calculated?

Big Games

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

Week of 4/11100.0*Chance in playoffs100.0*Playoffs100.0*Average seed
Suva 0 Auckland City 3 +31.3
+31.3
+2.7
Auckland City 3 Western United 0 +12.5
+12.5
+0.6
Pirae 3 Lupe ole Soaga 3 +1.8
+1.8
+0.1
Suva 2 Amicale 3 -0.9
-0.9
-0.0
Tafea 2 Hekari United 3 -0.7
-0.7
-0.0
Team Wellington 2 Tefana 1 -0.7
-0.7
-0.0
Ba 3 Gaïtcha 0 -0.5
-0.5
Hekari United 0 Team Wellington 2 +0.3
+0.3
-0.0
Western United 0 Amicale 1 -0.3
-0.3
Ba 3 Lupe ole Soaga 1 +0.1
+0.1
-0.1
Gaïtcha 5 Pirae 2 +0.0
If winner is:HomeDrawAway
Tefana vs Hekari United+0.3+3.5-1.8
+0.3+3.5-1.8
+0.0+0.1-0.0
Tefana vs Tafea-1.8+1.4+0.9
-1.8+1.4+0.9
Tafea vs Team Wellington+2.4-0.3-0.3
+2.4-0.3-0.3
+0.3+0.2-0.1
If winner is:HomeDrawAway
Week of 4/18100.0*Chance in playoffs100.0*Playoffs100.0*Average seed
Amicale vs Auckland City-34.1InIn
-34.1YesYes
-2.3-0.2+0.8
Gaïtcha vs Lupe ole Soaga-2.8+2.9+2.9
-2.8+2.9+2.9
-0.0+0.1+0.1
Ba vs Pirae-0.2-0.2+3.5
-0.2-0.2+3.5
-0.1+0.3+0.4

What If

Chances based on how well the Auckland City finish out the regular season.   Explain

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-D-LplayoffsPlayoffs123456789101112Count
91-0-0InYes6331510,869,673
70-1-0InYes740533,328,334
60-0-157.6%57.6%0651321003,459,785
Total:91.7%91.7%4027141062017,657,792
Points
Chance Will Make Playoffs