IFRS 10 Power
“Power” is defined as the investor having such rights that (s)he can direct the activities that affect the investee’s returns. In the simplest cases, such power arises from the voting rights granted by shares. A parent company exerts power when it owns directly or through intermediate subsidiaries more than half of the voting power of the investee. Its vote allows it to direct the investee’s activities and appoint key members of its governing body.