Top 28 Percent Of Income Earners Paid 55 Percent Of Total US Income Tax

From Tax Foundation, "New IRS Data: Wealthy Paid 55 Percent of Income Taxes in 2014" by Scott A. Hodge:

As the nearby chart shows, the wealthy’s tax burden is considerably larger than their share of the nation’s income. High-income taxpayers earned 28 percent of total adjusted gross (AGI) income in 2014 while paying 55 percent of the entire income tax burden. By contrast, the remaining 145 million taxpayers command 72 percent of the nation’s income, but paid a combined total of 45 percent of all income taxes.

Source: Tax Foundation