One way to amend the Constitution allows of the states to request a national constitutional convention that can propose amendments that go into effect when approved by of the states.

Two-thirds, three-fourths

Explanation:

The constitutional convention includes the amendmend in the constitution or bring a new constitution into effect. For this reason the constitution allows that two-third of the total states must propose a national constitution convention and propose what are amendmends which are required and important. After a long debate held, the right of vote is given to every state for bringing this constitutional amendmend or new constitution into effect. So to approve the constitution to bring into effect the three-forth of the states have to approve.

50% because no one is smart enough to relize that money makes the world go round and 99% of the earth hates donald trump the other 1% is the republicans go figure right