I amended return and now have to mail it in. I am getting $258 less than original return, do I have to mail a check with amendment even if my return wasn't issued yet?

When I first filed I was getting back 900. Then I realized I'd made a mistake in filing and amended my return before any money was issued to me. Now I have to mail in my amendment and my return is $650. Do I need to send a check for $250 with my amended return, even though I was never issued the $900?