Final answer:
A woman must own at least 51% of a company's shares to be considered an entrepreneur, as this represents a controlling interest allowing her to make key business decisions autonomously.
Step-by-step explanation:
The minimum percentage of share of a company necessary for a woman to be considered as an entrepreneur is 51%. Ownership of this majority stake typically provides controlling interest in the company, which is often the criterion used to determine whether a person is considered an entrepreneur or not. The individual with a majority stake is in a position to make key decisions about the operation and strategy of the company without requiring consent from other shareholders.