I would hope WGT does not count 1 disconnect as 1% point.
I would say maybe, 1 disconnect equals 1/2% or even 1/4% points.
This would still give the other players an idea of a player's disconnects.
An even better idea would be for each completed game count as a plus % point.
This way players who do not disconnect would have 100% showing, but would also have the completed games (in the bank).
This option would also let players redeem themselves with completed games and raise their completed game % points.