ADA, MI - Amway Corp. announced sales of $10.8 billion for 2014, an 8 percent decline that company officials blamed on lower revenues in China and fluctuation in foreign currency exchange rates.

LANZHOU, China — Feng Gang stood in front of 150 people in a conference hall in Beijing that Amway, the U.S. marketing giant, calls its flagship “experience center.” Introduced endearingly as Big ...