Você pode colar a tabela em uma caixa de texto e girar a caixa de texto (answer via Quora ):
Though the table will be still editable, while editing a shape that has text inside, Word resets the text temporarily to the default orientation.
Here are the steps:
Create a table. Then select all the table contents using the icon on one of the table corners. Copy the selection.
Create an empty textbox outside the table, right click on the textbox and choose “Add text”.
Paste the table you have copied inside the textbox. Note that the size of the textbox will affect how the table will look like. Unless there’s enough space inside.
Rotate the textbox(which will consequently rotate all its content including the table) using ordinary rotation icon(the green circle).