Below excerpt from https://www.newsletter.datadrivenvc.io/p/startup-graduation-rates-how-many

Less Than 1 in a 100 Startups Exit

The European tech ecosystem is thriving, with around 15,200 new tech startups founded each year, surpassing the 13,700 founded annually in the US. Yet, despite this impressive number, the reality is stark: only a small percentage of these companies secure funding, and even fewer make it through the various venture stages to reach acquisition or IPO. In fact, roughly 0.595% of all startups manage to achieve funding beyond a Series D or an exit, while the majority either stagnate or fail."