Excluding Government owned housing housing, Dorchester has 15,918 Residential area including 4,344 or 27.3% Single-family detached home homes, 3,674 or 23.1% Multi-family residential homes, 3,919 or 24.6% three-family homes, and 3,981 or 25.0% Condominium units. The median sales price for all residential property types is 244,450. In 2013, there were 52 foreclosures petitions reported in Dorchester, representing 22.41% of the 232 foreclosures reported for the entire City Boston.  Subsequently, 37 out 147 distressed buildings documented in Boston are located in Dorchester.
Question: How many more percentage of Condominiums than multi-family homes?
Answer: 307; 1.9