In a survey of those aged 18 or older, 18% of the respondents are aged 18-24, 29% are aged 25-44, and 38% are aged 45-64. The percentage of the respondents in each age group who own their home is 0.2%, 25.4%, 63.2%, and 83.7% for those aged 18-24, 25-44, 45-64, and 65 or older, respectively.
a. What percentage of the respondents overall do not own their home?
b. Of those who do not own their home, which age group forms the largest percentage and what is the percentage for that group?