英语翻译该销售地区占总公司营业额的49%,是我公司业绩最好的大区.主要负责欧美的业务,销售额占总额15%.两句翻成英语

The region, whose sales contributes 49% of total market sales of the headquarters, achieves the best performance of our company.
Primarily in charge of the sales of Europe and the USA, whose sales account for 15% of total sales