Mich. Comp. Laws § 450.3141: Meetings; petitions; signatures; quorum.

Sec. 1141.

Regular meetings of members shall be held at a time and place prescribed in the bylaws but not less than annually. A special meeting of members may be called by the board of directors or by written petition of members. A petition shall state the purpose or purposes for which the meeting is to be called. Unless the bylaws provide for a smaller percent or number, the number of member signatures required for such a petition shall be 10% of the members. Notwithstanding section 415, unless the articles or bylaws provide a greater percentage or number, a quorum shall be 10% of the members or 50 members, whichever is less.