MEXICO CITY — President Enrique Peña Nieto said Wednesday that he would disclose details of his assets, a day after his wife promised to give up an opulent new home in one of this city’s most expensive neighborhoods.

Mr. Peña Nieto’s announcement appeared to be an attempt to quiet the scandal that has been simmering over the house since its existence was first revealed 10 days ago. The flap has threatened to undermine his presidency while he is trying to contain the political fallout from the disappearance of 43 students at a rural college in September.

Huge demonstrations in honor of the students were scheduled here and in a number of state capitals on Thursday, the 104th anniversary of the Mexican Revolution. Instead of observing the traditional parade from the National Palace, Mr. Peña Nieto plans to watch it at a military parade ground while students, unions and other groups rally at different points around the city to protest.

Two years after taking office, Mr. Peña Nieto is facing the most difficult period of his presidency so far, with criticism mounting that the government is unwilling to rein in corruption. He acknowledged those concerns obliquely on Wednesday as he made his announcement.