Median Dilution across all the companies (regardless of the round size) comes to about 20.9% , which means on an average regardless of how much you’re raising, the data suggests that you’re going to dilute about a fifth of your company.
All the data (well almost) you need around Seed Investments in India
Rishabh Kaul

How did you find dilution data from almost 300 deals over 5 years? The most accurate data can only be derived from cap tables. I may have missed it but it would be good to know your data source.