1. Pakistan: Hindus of Pakistan mostly crossed over to India in 1947. Many were killed in riots I agree, but same is true to Muslims migrating to Pakistan.
Most Hindus of pakistan are now converting to Christianity due to increased efforts of Misionaries there. That is second reason for their diminishing population.
2. Bangladesh: Imagine, when Muslims of B'Desh can illegally flee into India despite communal oppression of Muslims here, how can one think Hindus will prefere to Stay there. Obviously, unspoken exodus of B'Desh Hindus to India is reason of diminishing %age...not their killing.
You are a habitual Liar who wishes to twist facts to suite own nefarious theories
