Chang was born in Hoboken, New Jersey in 1972 to Joe and Betty . His parents both grew up in Taiwan (though were born elsewhere) and were educated in the United States, where they met. (Betty moved to the US in 1959 and Joe moved in 1966. They were introduced by a mutual friend.) Betty was the daughter of the Republic of China’s ambassador Michael Tung and was born in New Delhi, India. Joe was born in Chaozhou, Guangdong, and moved to Taiwan at age seven. Michael’s Chinese name was chosen by Joe, and his English name by Betty (who named him after her father).
Chang dropped out of Grade 10 at San Dieguito High School in Encinitas, California, after passing his GED in February 1988 in order to pursue a professional tennis career. Chang served as Chairman of ATP Tour Charities in 1994. He has supported grassroots tennis development in Asia through his Stars of the Future program in Hong Kong and the Reebok Challenge across Asia. Chang was one of five athletes named in the second annual “Most Caring Athlete” list by USA Today Weekend in 1995. In 1997, he was given one of seven Asian-American leadership awards by A Magazine for his status as a role model for Asian-American youth. He has also served as a national spokesman for the National Fish and Wildlife Federation in the US.
A devout Christian, Chang and his family established the Chang Family Foundation in 1999 “to introduce the Good News of Jesus Christ to the World”.In 2001, Chang served as a goodwill ambassador for the 2008 Beijing Olympic bid committee.Chang currently lives in Mercer Island, Washington. He is an avid fisherman, who often takes fishing trips while traveling. He also has a passion for breeding African cichlids in several large freshwater aquariums at his home.Chang published a book about his career, Holding Serve: Persevering On and Off the Court, in 2002. He now attends the Talbot School of Theology in La Mirada, California.