How many shares can shareholders of listed companies have the decision-making power?

You can refer to the company law

Article 39 Shareholders' meetings are divided into regular meetings and temporary meetings.

Regular meetings shall be held on time in accordance with the provisions of the articles of association. If shareholders representing more than one-tenth of the voting rights, more than one-third of the directors, the board of supervisors or the supervisors of a company without a board of supervisors propose to convene an interim meeting, an interim meeting shall be convened.

Article 103 Shareholders attending the shareholders' meeting shall have one vote for each share they hold. However, the shares of the company held by the company have no voting rights.

The resolution of the shareholders' meeting must be passed by more than half of the voting rights held by the shareholders present at the meeting. However, the resolutions of the shareholders' meeting to amend the Articles of Association, increase or decrease the registered capital, and the resolutions of the company's merger, division, dissolution or change of corporate form must be adopted by more than two thirds of the voting rights held by the shareholders present at the meeting.