S.C. Code Ann. § 58-15-170: Stockholders' meeting shall authorize amendment.

Any railroad, steamboat, street railway or canal company in this State desiring to increase or decrease its capital stock, have its name changed or have its charter otherwise amended shall call a stockholders' meeting, giving at least thirty days' notice of the time, place and purpose of the meeting, and, if a majority of the stock of the corporation be present in person or by proxy, a resolution embodying the proposed changes, alterations or amendments be adopted, such resolution shall be attached to the petition filed with the Secretary of State under the provisions of Section 58-15-160.