Percentage wise what I found goggling: table salt is 39% sodium, other natural salts are low to min 30's
Some claim table salt in its smaller crystals has less taste, so you might use more. Table salt has some anti-caking agents thrown in too.
But Dr Axe claims pink salt is the best of all, (just because... ha ha)
/draxe.com/10-benefits-celtic-sea-salt-himalayan-salt//draxe.com/pink-himalayan-salt/Still should not go bonkers on pink salt either, he lists the cons of over salting.