By Ananya Mariam Rajesh (Reuters) -Campbell Soup shares dropped as much as 9% on Wednesday, after the company disappointed investors by maintaining its full-year forecasts for sales and profit despite beating quarterly earnings. Packaged food companies such as Campbell, Kraft Heinz and Kellogg Co have been raising prices to counter the impact of higher input costs stemming from supply chain snags and the Russia-Ukraine war. The move helped Campbell Soup post a 5% rise in quarterly sales, although its margins slipped to 30% from 31.2%.