NorthWest Biotherapeutics Inc (NWBO)

[CherryTree1]

The me try to go slower and step by step to help you understand.
92,358,027 = the total of shares of common stock (not the number that voted)
42,304,837 = if this is the number of votes cast for LP and it represent 82.4% then the total votes cast 51,340,822 = 42,304,837 FOR votes + 9,017,855 votes Withheld
double check by dividing 42,304,837 by 51,340,822 = 0.824 (or 82.4%)
again this is simple math
66,730,776 = 42,304,837 FOR votes + 9,017,855 votes Withheld +15,408,084 "Broker Non-Votes.

so I am not sure what you are confused about. If you want to do this with the votes cast instead of the total potential votes that could have been cast we can take a look at that.
If NW had voted against LP with his 25,915,937 shares the best LP could have done if the same 51,340,822 votes were cast is 50.5% (25,915,937 divided by 51,340,822). She would have barely squeaked by and definitely would have been no were near the 82.4%.
Hope that helps.