Dutch universities go for up to 25%, just for the IP rights [1]. With seed funding etc it often goes up to 30-35%.
[1] Dutch Universities spin-off terms: https://www.delftenterprises.nl/wp-content/uploads/2023/07/D...
[1] Dutch Universities spin-off terms: https://www.delftenterprises.nl/wp-content/uploads/2023/07/D...