Shares of the Campbell Soup Company shot to a record high yesterday after management announced a $160 million restructuring plan, the $210 million purchase of a German soup business, a $2.5 billion stock repurchase plan and a large increase in its advertising budget. The rich gumbo of announcements stilled the clamor on Wall Street for information following months of rumors about downsizing, restructuring and acquisitions. The revamping would entail the dismissal of 650 workers, including 11 percent of the headquarters staff in Camden, N.J. ''We are poised for breaking away from our competitors in the food industry,'' said David W. Johnson, the company's president and chief executive. In pep-rally style, he presented the company's reorganization plan as a turning point in the history of the world's largest soup maker, addressing an audience of 90 securities analysts yesterday in Manhattan.