(1) Unless the articles of incorporation provide an alternative procedure, amendments to the articles of incorporation must be made in the following manner:
(a) If there are members entitled to vote on a proposed amendment to the articles of incorporation, the board of directors must adopt a resolution setting forth the proposed amendment and directing that it be submitted to a vote at a meeting of members entitled to vote on the proposed amendment, which may be either an annual or a special meeting. Written notice setting forth the proposed amendment or a summary of the changes to be effected by the amendment must be given to each member entitled to vote at such meeting in accordance with the articles of incorporation or the bylaws. The proposed amendment shall be adopted upon receiving at least a majority, or any larger or smaller percentage specified in the articles of incorporation or the bylaws, of the votes which members present at such meeting or represented by proxy are entitled to cast; or
(b) If there are no members or if members are not entitled to vote on proposed amendments to the articles of incorporation, an amendment may be adopted at a meeting of the board of directors by a majority vote of the directors then in office.
(2) Unless otherwise provided in the articles of incorporation, members entitled to vote on proposed amendments to the articles of incorporation may amend the articles of incorporation, without action by the directors, at a meeting for which notice of the changes to be made is given.