In 2017, NPR earned 38% of its revenue from individual contributions; 19% from corporate sponsorship and licensing; 10% from foundation donations; 10% from university licensing and donations; 8% from the Corporation for Public Broadcasting; and 4% from federal, state, and local governments via member stations.
https://www.influencewatch.org/non-profit/national-public-ra...
https://www.npr.org/about-npr/178660742/public-radio-finance...
this quote comes directly from npr (see concluding statement on this page[0]):
> "On average, less than 1% of NPR's annual operating budget comes in the form of grants from CPB and federal agencies and departments."
[0]: https://www.npr.org/about-npr/178660742/public-radio-finance...
so yes, that's most.
[0]: "As of September 30, 2021, 13 donors comprise approximately 77% of the gross pledges receivable balance.", from page 31 of their FY2020 consolidated financials