a soybean is only about 20% oil. in order for 17% of all end uses of soybeans to be oil, we need to press about 85% of them. which is exactly what the usda says:
But I think you are interpreting this wrong. This doesn't say that 80% of soybeans are pressed into oil at all. It says that 80% are processed into soybean meal (which gets fed to animals) and oil (which are mostly for human consumption). And with the data from ourworldindata it means that around 80%-13.2%=66.8% (very roughly) of soybeans are processed into soybean meals which is also very similar to the data ourworldindata provides:
The majority (77%) of the world’s soy is fed to livestock for meat and dairy production. 7% is fed directly to animals as soybeans, but the remainder is first processed into soybean ‘cake’.{ref}Soybean cake (sometimes referred to as soybean meal) is a high-protein feed made from the pressurisation, heat-treatment and extraction processing of soybeans. The oil is extracted from the soybeans to leave a protein-rich product.
oh I see where you made a mistake. you didn't account for the 4% at the bottom of the chart. and you don't seem to understand that soy meal is the by-product of pressing soybeans for oil. That's soybean is only about 20% oil. In order for 17% of all end uses of soybeans to be oil about 85% of all soybeans must be pressed for oil The byproduct of that process produces soy meal that soy meal makes up about 69% of the weight of the entire soybean crop. that by-product is what is fed to animals.