[单选题]
2. In Botswana, forest cover decre ctboc+4nhy.4 b 1 6kjudee5j ka58(fxased from 18.8 million hectamye2q24+f7uvth rh 8)g0wkc lres to 15.3 million hectark)+g w2hyt mv0hec2q7 ruf84les between 1990 and 2020. Calculate the percentage loss in forest cover during this period.