The chart by federal reserve suggest the same but it's comprehensive. 

It could be said that "the number of US people hold 2.5% of US Wealth". 

Coinsreporter

Something like this, but with more recent data 

https://www.cbo.gov/publication/58533

https://www.federalreserve.gov/releases/z1/dataviz/dfa/distribute/chart/#quarter:142;series:Net%20worth;demographic:networth;population:1,3,5,7,9;units:shares

econ

The bottom 50% of the US households now hold only 2.5% of total US wealth

Something like this, but with more recent data https://www.cbo.gov/publication/58533

More recent data and just shares: https://www.federalreserve.gov/releases/z1/dataviz/dfa/distribute/chart/#quarter:142;series:Net%20worth;demographic:networth;population:1,3,5,7,9;units:shares