A. Amendments to the articles of incorporation may be proposed by a two-thirds’ vote of the board of directors or by petition of one-tenth of the association’s members. Notice of the meeting to consider the amendment shall be sent by the secretary at least thirty days in advance to each member at his last known address, accompanied by the full text of the proposal and by that part of the articles to be amended. Two-thirds of the members voting may adopt the amendment and, when verified by the president and the secretary, it shall be filed with the public regulation commission [secretary of state] within thirty days of its adoption, and a fee of twenty-five dollars ($25.00) shall be paid.

B. If the amendment is to alter the preferences of outstanding shares of any type or to authorize the issuance of shares having preferences superior to outstanding shares of any type, the vote of two-thirds of the members owning the outstanding shares affected by the change shall also be required for the adoption of the amendment.

C. The amount of capital and the number and par value of shares may be diminished or increased by amendment of the articles, but the capital shall not be diminished below the amount of paid-up capital existing at the time of amendment.