NEW YORK ( TheStreet) -- Campbell Soup's ( CPB) first-quarter sales fell 1% to $2.16 billion because of a decrease in promotional spending and a drop in volume. The food maker said sales of U.S. simple meals declined 3% from a year ago to $874 million, while U.S. soup sales were down 4%. Campbell Soup's first-quarter earnings fell to $265 million from $279 million a year ago. Campbell Soup's per-share earnings of 82 cents a share topped analysts' estimates of 79 cents. The company confirmed 2012 fiscal-year guidance of net sales growth flat to up 2%. -- Written by Alexandra Zendrian >To contact the writer of this article, click here: Alexandra Zendrian >To submit a news tip, send an email to: email@example.com.