Answer based on context:

As of the census of 2010, there were 4,855 people, 1,976 households, and 1,271 families residing in the town. The population density was 93.6 inhabitants per square mile . There were 2,478 housing units at an average density of 47.8 per square mile . The racial makeup of the town was 97.5% White, 0.4% African American, 0.6% Native American, 0.4% Asian, and 1.1% from two or more races. Hispanic or Latino of any race were 0.9% of the population. There were 1,976 households of which 27.7% had children under the age of 18 living with them, 49.1% were married couples living together, 9.9% had a female householder with no husband present, 5.3% had a male householder with no wife present, and 35.7% were non-families. 28.9% of all households were made up of individuals and 13.5% had someone living alone who was 65 years of age or older. The average household size was 2.32 and the average family size was 2.82. The median age in the town was 44 years. 20.8% of residents were under the age of 18; 6.4% were between the ages of 18 and 24; 24.2% were from 25 to 44; 30.6% were from 45 to 64; and 18.2% were 65 years of age or older. The gender makeup of the town was 50.6% male and 49.4% female.

How many more people, in terms of percentage, were in the two largest racial groups combined compared to the two smallest racial groups combined?
97.8