Section 70. A corporation may authorize, at a meeting duly called for the purpose, an amendment of its articles of organization, by vote of a majority of each class of stock outstanding and entitled to vote thereon effecting any one or more of the following:

(a) an increase or a reduction of its capital stock of any class then authorized;

(b) a change of the par value of its authorized shares with par value or any class thereof;

(c) a change of its authorized shares with par value or any class thereof into any number of shares without par value, or the exchange thereof pro rata for any number of shares without par value;

(d) a change of its authorized shares without par value or any class thereof into a greater or lesser number of shares without par value, or the exchange thereof pro rata for a greater or lesser number of shares without par value;

(e) a change of its authorized shares with par value or any class thereof into a greater or lesser number of shares with par value, or the exchange thereof pro rata for a greater or lesser number of shares with par value;

(f) a change of its authorized shares without par value or any class thereof into any number of shares with par value, or the exchange thereof pro rata for any number of shares with par value;

(g) a change of its corporate name.

Any reference in this section to any change with respect to authorized shares shall be deemed to refer to and include both the unissued and the outstanding shares; provided, however, that any change which impairs or diminishes the preferences, voting powers, restrictions (including restrictions on transfer), qualifications, special or relative rights or privileges of any outstanding shares may be authorized only in accordance with the provisions of section seventy-one. The aggregate par value of shares becoming outstanding by virtue of any change or exchange effected pursuant to the provisions of this section or of section seventy-one shall not exceed the amount of capital shown on the balance sheet of the corporation with respect to the outstanding shares so changed or exchanged, plus the amount of any surplus which shall be appropriated to capital in connection with such change or exchange.