share capital

Variation of share holders rights means the rights attached to such shares are different among other share like preference shares having a exclusive rights for fixed rate or percentage of dividend to receive and the payment towards priority is first to them i.e before payment towards equity share holders in period wound up.
Equity share holders are real owners of company ,having different voting rights refer section 43(a)(¡¡) of companies act.2013 and voting rights and dividend after the payment of preference shareholders referred section 43(a)(¡).
As per Companies Act.2013 or previous company law.the resolutions to be passed with accordance with companies (Management and Administration)rules.2014.

The rights are altered by conducting EGM for separate class or classes of shareholders to pass a resolution for same.by effecting their rights.