How can I work as a business analyst in a company?

A business analyst is someone who plays a key role in every business around the world. They are the ones who understand the changes that are needed in a business, assess the business for the impact of these changes, document and analyze them and hence communicate and deliver these necessary changes

For that you have to pursue MBA degree, and gain skills in the analyst department and after that you can be able to join any company in this field, but if you want to hired in some good MNC, then you have to work really hard in this area.