According to analysis of data from Global Forest Watch, the Indonesian portion of Borneo lost 10.7 million hectares of tree cover between 2002 and 2019, of which 4 million hectares was primary forest, compared with Malaysian Borneo's 4.4 million hectares of tree cover loss and 1.9 million hectares of primary forest cover loss. As of 2020, Indonesian Borneo accounts for 72% of the island's tree cover, Malaysian Borneo 27%, and Brunei 1%. Primary forest in Indonesia accounts for 44% of Borneo's overall tree cover.