Impeachment of the President requires the agreement of a supermajority of Senators. A supermajority is:*1 point100%51%67%
A supermajority is a threshold that requires a larger percentage of votes than a simple majority. In the case of the impeachment of the President, it requires the agreement of a supermajority of Senators, which means it is more than 51%.
To be more specific, in the United States Senate, a supermajority typically refers to a two-thirds (67%) majority vote. Therefore, the correct answer in this case would be 67%.