Section 8. A corporation subject to this chapter may authorize, at a meeting duly called for the purpose, an amendment of its articles of organization by vote of the majority of each class of stock outstanding and entitled to vote thereon, effecting any one or more of the following:
(a) a change of the par value of the shares of its capital stock in accordance with clause (5) of paragraph (a) of section six, provided the aggregate par value of the outstanding shares shall not be increased by any such change, and provided further that such change shall not be effective unless the department shall approve the same on an application of the corporation filed within thirty days after the passage of the vote authorizing such change;
(b) an increase of its capital stock of any class then authorized, or a reduction of any such class of stock; and
(c) change of its corporate name.