context: Today, Estonia is an ethnically fairly diverse country, ranking 97th out of 239 countries and territories in 2001 study by Kok Kheng Yeoh. In 2008, thirteen of Estonias fifteen counties were over 80% ethnic Estonian. The counties with the highest percentage Estonians are Hiiu County (98.4%) and Saare County (98.3%).  However, in Harju County (which includes the national capital, Tallinn) and Ida-Viru County, ethnic Estonians make up only 59.6% (55.0% in Tallinn) and 19.7% of the population, respectively.  In those two counties, Russians account for 32.4% (36.4% in Tallinn) and 71.2% of the population, respectively.  In the nation as a whole, Russians make up 24.8% of the total population.
question: How many percent of people were not ethnic Estonian?
answer: 20