Accounting and investment banking are totally different animals. Let’s put it this way; you probably would have a higher chance to land an investment banking job with an engineering background than accounting.
There’s no such thing as accounting major with specialization in investment. I think the data in that report simply mean 10% of the accounting majors end up in investment field. My bet is many of them probably double major in finance. In any case, accounting is not close to investment banking. Most people in investment banking came from elite schools that don’t even offer accounting.