(CNSNews.com) - Nationally syndicated talk-radio host Mark Levin’s new book, Rediscovering Americanism and the Tyranny of Progressivism, is listed as the No. 1 top-selling nonfiction book for the week ending July 16, according to Nielsen's sales numbers and The Wall Street Journal’s best-seller list. However, The New York Times has downgraded the book to No. 2 on its bestseller list for the same week.

Nielsen Bookscan reports that Levin’s book, which debuted on Independence Day, sold 16,428 copies during the second week of July, topping Neil deGrasse Tyson’s Astrophysics for People in a Hurry and J.D. Vance’s Hillbilly Elegy by about 2,500.

The New York Times’ famous best-seller list had Rediscovering Americanism at the number one position for its first two weeks, but then dropped it to second place for the week ending July 16. By contrast, The Wall Street Journal’s best-seller list has Levin’s book listed as No. 1 for the same period.

CNSNews.com emailed The Times’ communications division to inquire about the process by which the best-seller list ranks books. They responded by linking to a lengthy description posted on the organization’s website.

“Rankings reflect unit sales reported on a confidential basis by vendors offering a wide range of general interest titles,” reads the description. “Every week, thousands of diverse selling locations report their actual sales on hundreds of thousands of individual titles. The panel of reporting retailers is comprehensive and reflects sales in stores of all sizes and demographics across the United States.”

On Wednesday, July, 19, the conservative Mark Levin posted a short response to the NYT’s decision on his website with the title, “New York Times Tries to Squelch Rediscovering Americanism.”

Levin also posted Nielsen's numbers documenting that week’s book sales below a short paragraph on the issue.

“Despite the fact that my book sold more hardcover copies than any other non-fiction book last week, the New York Times just announced it was declaring a different book #1 on its list and my book would be dropped to #2,” Levin stated. “This isn’t the first time the New York Times has done this to one of my books.”