S.C. Code Ann. § 33-47-240

The articles of incorporation may be altered or amended at any regular meeting or at any special meeting called for that purpose. An amendment must first be approved by two thirds of the directors and then adopted by a vote representing a majority of a quorum of the members attending a meeting prior to which notice of the proposed amendment shall have been given. Amendments to the articles of incorporation when so adopted shall be filed in accordance with the provisions of the general corporation law of this State.