Yes, you can download and upload the raw DNA data from ancestry and use on other sites. The easiest appears to be gedmatch.com, a "crowd-sourcing" site that needs our financial along with DNA contributions. It's all still very confusing and I still haven't figured out how to look at my Y Chromosome which I seriously need for Welsh connections.
But I found my American Indian percentage! Or at least one of the versions. There are several ways to look at DNA on the Gedwatch site. It scares me to begin to understand them cuz of a little knowledge and stranger-danger, etc. One of the analyses gave me: