About four-fifths of the nearly 2 billion pounds of pumpkins grown in the United States each year are used for Halloween celebrations, according to data from the Department of Energy.

Source: https://www.dailybreeze.com/2023/10/20/from-pumpkins-to-costumes-heres-how-to-go-green-this-halloween/

Brown, Strange, Ownenu and center David Andrews make up four-fifths of the Patriots’ preferred starting O-line.

Source: https://nesn.com/2023/09/patriots-reportedly-made-this-change-to-trent-browns-contract/

More than four-fifths of this positive jump was attributable to a drop in covid-19 deaths.

Source: https://www.boston.com/news/coronavirus/2023/11/29/new-cdc-life-expectancy-data-painfully-slow-rebound-covid/

The figure is even higher for teenagers, with four-fifths having used generative AI tools and services.

Source: https://deadline.com/2023/11/ofcom-generative-ai-young-brits-research-1235638092/