<p>RSRM64: If you have declared a major (say engineering), but then junior year decide to switch to history, there are no additional forms to fill out until graduation. Simply stop taking engineering classes and take history ones. Obviously you will have to formally change it at some point, just not immediately by any means.</p>
<p>I have several Math-Econ friends who are getting top jobs. One is going to Deutsche bank, and two are going to JP morgan with 90k salaries and 15 k signing bonuses. </p>
<p>They are doing very well.</p>