Looks like you found a bug in the Google Keyboard on the final beta of Android Nougat on the Nexus 6P! That symbol shows up on the Google Keyboard in place of percent.

I do understand the need for people to see others that look like themselves, but at what cost? Here is the cost: when you say you want "larger percent of X demographic", you could also say you want a "smaller percent of Y demographic". A company is not simply going to have a bigger workforce to fit more black women, they are going to pass on some Asian man to fit them in. That's a disservice to some hard working people. We are, after all, people. We all want different things in life.