Original sentence: The Finland-Swedes form a minority group in Finland, about 265,000, comprising 5.10% of the population of mainland Finland, or 5.55% if the 26,000 inhabitants of Åland are included (there are also about 60,000 Finland-Swedes currently resident in Sweden)
Edited sentence: The Finland-Swedes form an important minority group in Finland, about 265,000, comprising 5.10% of the population of mainland Finland, or 5.55% if the 26,000 inhabitants of Åland are included (there are also about 60,000 Finland-Swedes currently resident in Sweden)