View.RevisionsBalloonWidthType (Word)
Sets or returns a WdRevisionsBalloonWidthType constant representing the global setting that specifies how Microsoft Word measures the width of revision balloons. Possible return values are wdBalloonWidthPercent - Measured as a percentage of the width of the document, wdBalloonWidthPoints - Measured in points.
The RevisionsBalloonWidthType property sets the measurement unit to use when setting the RevisionsBalloonWidth property.
Sub BalloonWidthType()
With ActiveWindow.View
.RevisionsBalloonWidthType = wdBalloonWidthPercent
.RevisionsBalloonWidth = 25
End With
End Sub