Bitcoin will have a much higher percentage, the main reason being that Bitcoin has been around a lot longer and is now accepted as a medium of currency by a number of online retailers.

https://www.independent.co.uk/life-style/gadgets-and-tech/news/bitcoin-stores-spend-where-starbucks-whole-foods-crypto-a8913366.html

Steem on the other hand has virtually no value outside of this forum. I am not aware of any retailers which accept Steem as a method of payment.