“Brazil’s census addresses ethnicity and race by categorizing people mainly by skin color. It asks people to place themselves into one of a number of categories, some of which would seem unusual to an American or European. As well as ‘indigenous’ (the smallest category), Brazilians are asked to report whether they believe they are white, black, brown or yellow.
The results of the census indicated that 92 million (48%) Brazilians were white, 83 million (44%) were brown, 13 million (7%) were black, 1.1 million (0.50%) were yellow and 536,000 (0.25%) were indigenous. This method of classifying race is controversial within Brazil, and IBGE has been criticized for continuing to use it.“
http://worldpopulationreview.com/countries/brazil-population/