5月15日电，恒生银行表示，调整业务架构，受影响员工约占核心业务的1%。

Group 1 - The core point of the article is that Hang Seng Bank is restructuring its business operations, affecting approximately 1% of its core business employees [1] Group 2 - The restructuring indicates a strategic shift within the company to enhance operational efficiency [1] - The impact on employees is relatively minor, suggesting that the core business remains stable despite the changes [1]