Therefore, it's safe to say that a very small percentage of people in Brasilia speak Spanish.
Here's why:
* Brazil's history: Brazil was colonized by Portugal, and Portuguese became the dominant language.
* Geography: Brazil shares a border with Spanish-speaking countries, but the vast majority of people in Brasilia are Brazilian and speak Portuguese.
* Language policy: While some people might learn Spanish as a second language, Portuguese is the language of education, government, and daily life in Brasilia.
It's difficult to give an exact percentage without specific data on language use in Brasilia. However, it's highly likely that the percentage of people who speak Spanish is very low compared to those who speak Portuguese.