The survey defines the top one percent as "Net worth of $13,390,060 or more," which sounds greatly skewed versus what I assume is a lower median net worth at the 99th percentile. I don't think 1 in 100 Americans have over $13 million in assets.
This threshold has about doubled since 2010, which should not be too surprising as house prices more than doubled and the S&P500 increased six fold in the last 15 years.
edit: seems like I'm wrong
More stats (including other decile cutoffs, mean and median with within the deciles) can be found here: https://fred.stlouisfed.org/categories/33001
Net worth is a weird number for many people to interpret because it is pretty intangible -- most can't cash it out.