A question about PGN files of computer analyzed games

When you look inside the PGN files of the computer analyzed games, you have an unexplained 'percentage' on the 'White' and 'Black' section.

An example:

[Event "Online Chess"]
[Site "Chess.com"]
[Date "2009.08.16"]
[Round "1"]
[White "0%"]
[Black "3.2%"]
[ECO "C20"]

What do they mean, and why are they occupying that space instead of our names? :P

PS. Oh, and if you have time, please comment on my suggestion of having ability to confirm conditional moves that was posted in General Discussion :) I didn't know about this forum when I was posting that...

I have never seen that before, my pgn file is like this...

[Event "Online Chess"]
[Site "Chess.com"]
[Date "2009.07.24"]
[Round "1"]
[White "budha2"]
[Black "Streptomicin"]
[Result "0-1"]
[WhiteElo "1798"]
[BlackElo "1786"]
[TimeControl "1 in 2 days"]
[Termination "Streptomicin won by resignation"]

1.e4 e6 2.Nf3 d5 3.exd5 exd5 4.d4 Bd6 5.Bd3 Ne7 6.O-O O-O 7.Nc3 c6 8.Ne2 Bf5 9.Ng3 Bxd3 10.Qxd3 Bxg3
 11.fxg3 Ng6 12.Re1 Nd7 13.b3 Qc7 14.Ba3 Rfe8 15.Rxe8+ Rxe8 16.Re1 Nf6 17.Rxe8+ Nxe8 18.Qe3 Nf6 19.Ne5 Nxe5 20.dxe5 Ne4
 21.Bd6 Qb6 22.Qxb6 axb6 23.Be7 f6 24.e6 Ng5 25.Bd8 b5 26.e7 Kf7 27.Kf2 Ne6 28.Ke3 Ke8 29.b4 Nxd8 30.exd8=N Kxd8
 31.Kf4 Ke7 32.g4 g6 33.g3 Ke6 34.h4 h6 35.c3 b6 36.h5 g5+ 37.Ke3 Ke5 38.Kd3 c5 39.Ke3 f5 40.a3 fxg4
 41.Kd3 c4+ 42.Ke3 d4+ 43.cxd4+ Kd5 44.Kd2 Kxd4 45.Ke2 c3 46.Kd1 Kd3 0-1

no percentage ever, that I have seen or know about.

I re-downloaded my analyzed PGN file, and they are still there.

Are you sure you downloaded a computer analyzed PGN file? Because my non-analyzed PGN files do show the names correctly...

ou, sry. Did not see it was comp analyzed, I will try it now.

[Event "Online Chess"]
[Site "Chess.com"]
[Date "2009.08.04"]
[Round "1"]
[White "0%"]
[Black "0%"]
[ECO "C50"]
[ChesscomGameID "25168790"]
[Annotator "Chess.com Computer Analysis"]
[Result "0-1"]
[WhiteElo "1709"]
[BlackElo "1618"]
{Inaccuracies(?!): 3 = 15.8% of moves | Mistakes(?): 1 = 5.3% of moves | Blunders(??): 1 = 5.3% of moves}

1. e4 {(Book Move)}  e5 {(Book Move)}
2. Nf3 {(Book Move)}  Nc6 {(Book Move)}
3. Bc4 {(Book Move)}  Nd4 {(Book Move)}
4. c3 $6 {(+0.41) INACCURACY - Perhaps better was 4. O-O}
({BEST MOVE (+0.89)} 4. O-O Nxf3+ 5. Qxf3 Nf6 6. d3 d6 7. Nc3 Be6  $16)
({INACCURACY (+0.41)} 4. c3 Nxf3+ 5. Qxf3 Qf6 6. Qg3 d6 7. d3 Be6 8. O-O Bxc4 9. dxc4  $14)
4... Nxf3+ {(+0.49)}
5. Qxf3 {(+0.49)}  Nf6 {(+0.55)}
6. O-O {(+0.55)}  d6 {(+0.63)}
7. d4 {(+0.51)}  Bg4 {(+0.47)}
8. Qd3 {(+0.51)}  Qe7 {(+0.70)}
9. d5 {(+0.44)}  h6 {(+0.71)}
10. Bb5+ {(+0.63)}  Bd7 {(+0.63)}
11. Nd2 {(+0.40)}  a6 {(+0.56)}
12. Bxd7+ {(+0.48)}  Qxd7 {(+0.46)}
13. b4 {(+0.28)}  Be7 {(+0.33)}
14. Bb2 {(+0.26)}  g5 {(+0.59)}
15. a4 {(+0.56)}  h5 {(+0.59)}
16. Nf3 $6 {(-0.09) INACCURACY - Perhaps better was 16. c4}
({BEST MOVE (+0.45)} 16. c4 h4 17. Ra3 O-O 18. a5 Ng4 19. h3 Nf6  $14)
({INACCURACY (-0.09)} 16. Nf3 g4 17. Ng5 Nxd5 18. Nxf7 Nxb4 19. cxb4 Kxf7  $10)
16... Nh7 {(+0.58)}
17. Ne1 {(+0.40)}  h4 {(+0.29)}
18. g3 $6 {(-0.76) INACCURACY - With that last move you went from roughly equal to having a worse position. Your best continuation was 18. b5}
({BEST MOVE (-0.08)} 18. b5 h3 19. Qxh3 Qxh3 20. gxh3 Nf6 21. bxa6 Rxa6  $10)
({INACCURACY (-0.76)} 18. g3 hxg3 19. fxg3 Qh3 20. Qe2 Nf6 21. Nd3 g4  $17)
18... Nf6 {(-0.90)}
19. Ng2 $2 {(-2.57) MISTAKE - That was a mistake. Much better was 19. Nf3}
({BEST MOVE (-1.04)} 19. Nf3 hxg3 20. fxg3 Qh3 21. Qe2 Ng4 22. Qg2 Qxg2+ 23. Kxg2 Ne3+ 24. Kf2 Nxf1 25. Rxf1  $17)
({MISTAKE (-2.57)} 19. Ng2 Qh3 20. Ne1 hxg3 21. Qxg3 Nxe4 22. Qxh3 Rxh3 23. Nc2 Nxc3 24. Bxc3 Rxc3  $19)
19... Qh3 {(-2.87)}
20. f3 {(-3.25)}  hxg3 {(-3.26)}
21. hxg3 {(-3.23)}  Qxg3 {(-3.23)}
22. Bc1 $4 {(-11.76) BLUNDER - Oh no - a blunder! You should have played 22. Qe2}
({BEST MOVE (-3.35)} 22. Qe2 O-O-O 23. b5 a5 24. Rae1 Rh2 25. Qf2 Qh3  $19)
({BLUNDER (-11.76)} 22. Bc1 Ng4 23. fxg4 Qxd3 24. Bxg5 Bxg5 25. Kf2 Qxe4  $19)
22... Ng4 {(-11.98) BLACK WINS - Play might have continued...}
({CONTINUATION (-11.98)} 22... Ng4 23. fxg4 Qxd3 24. Bxg5 Bxg5 25. Rf5 Qxc3 26. Raf1  $19)
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