The format in Word will be dictated by the paragraph Style being used. Your screen shots don't reveal that or what the underlying paragraph format is.

In any event, if you paste the table into Word using the 'Keep Source Formatting' paste option, simply going into Table Tools|Layout|Properties>Table, setting the 'preferred width' to something less than the page width should resolve the matter.

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]