90%+ for "tech startups," although it's very hard to find data that sorts through all the startups and separates them into tech and non-tech startups. Good source is https://www.failory.com/blog/y-combinator-failures#:~:text=O....

There is somewhat fuzzy on where you even draw the line. Does someone moonlighting on their Wordpress side hustle count as a company? There are many of those which seem unlikely go bankrupt - the most frequent end state is the sole proprietor quits due to lack of work or interest.