Mine

percentage_x = Math.round((s_width/contentwidth)*100);
				percentage_y = Math.round((s_height/contentheight)*100);

				trace(percentage_x + " | " + percentage_y);

				new Tween(contentclip, "_xscale", None.easeOut, contentclip._xscale, percentage_x, 0.5, true);
				new Tween(contentclip, "_yscale", None.easeOut, contentclip._yscale, percentage_y, 0.5, true);
				
				contentclip._x = 0;
				contentclip._y = 0;