The 2010 population represents an increase of just under 7% from the 1,223,400 people, 450,691 households, and 271,315 families reported in 2000. The estimated city population in 2009 was 1,306,300. The population density was . The racial makeup of San Diego was 58.9% White American, 6.7% African American, 0.6% Native American, 15.9% Asian American (5.9% Filipino American, 2.7% Chinese American, 2.5% Vietnamese American, 1.3% Indian American, 1.0% Korean American, 0.7% Japanese American, 0.4% Laotian American, 0.3% Cambodian American, 0.1% Thai American). 0.5% Pacific Islander American (0.2% Guamanian, 0.1% Samoan American, 0.1% Native Hawaiian), 12.3% from Race (United States Census), and 5.1% from two or more races. The ethnic makeup of the city was 28.8% Hispanic and Latino Americans or Latino (U.S. Census) (of any race); 24.9% of the total population were Mexican American, and 0.6% were Puerto Rican people. Median age of Hispanics was 27.5 years, compared to 35.1 years overall and 41.6 years among non-Hispanic whites; Hispanics were the largest group in all ages under 18, and non-Hispanic whites constituted 63.1% of population 55 and older.
Question: How many more people, in terms of percentage, belonged to San Diego's largest racial group compared to its second and third largest racial groups combined?
Answer: 30.7