Query Regarding IT Exemptions to Donations made to Religious Trusts

Hi all,

Recently I made a donation to Tirumala Tirupati Devasthanam (i.e., Sri Venkateshwara Sarva Sreyas Trust) which is eligible for deduction under U/S 80 G (5) (vi) of the Income Tax Act, 1961.But I have no clue whether it is eligible for a 100% donation (or) a 50% donation. So,could anyone of you please help me with this ?

Thanks,

Nitish