Before revision: It is estimated that out of these 528,000 knowledge workers, almost 170,000 are working in the IT software and services export industry; nearly 106,000 are working in the IT enabled services and over 230,000 in user organizations.From Website of the National Association of Software and Service Companies, one of the more authoritative sources of information 
After revision: .It is estimated that out of these 528,000 knowledge workers, almost 170,000 are working in the IT software and services export industry; nearly 106,000 are working in the IT enabled services and over 230,000 in user organizations.From Website of the National Association of Software and Service Companies, one of the more authoritative sources of information