This is not misinformation. This is the Bank of America analysis that CNN is getting its information from: link. While the percentage seems extreme, Bank of America explains that households with higher incomes might have bigger homes, which means bigger mortgages, insurance costs, property taxes, and utility bills. They might also have sources of income that are less easily accessible, "such as cash from sales of equities paid into brokerage accounts" (3). These important points are brought up in the CNN article. CNN is a mostly factual and credible source, and the author of the article has written multiple other articles for CNN about the economy and financial topics.