In terms of ancestry, 23,875 people claimed American ancestry, which is equivalent to 5.8% of San Juans population. Other sizable ancestry groups included those of Italian American descent, French American descent, and West Indian descent. People of Italian descent numbered at 1,694, forming 0.4% of the population; people of French descent numbered at 1,064, forming 0.2% of the population. Finally, those of West Indian descent numbered at 1,393, forming 0.3% of San Juans population. Approximately 1,026 people claimed Sub-Saharan African ancestry; 719 claimed Irish American ancestry; 646 claimed German American ancestry; 431 claimed Arab American ancestry, and 346 claimed English American ancestry. There are many other ancestry groups in San Juan, but they are very scant.
Question: How many percent of people were not of Italian descent?
Answer: 99.6