You didn't read that very interesting article linked above.
If you have 97% white applicants, then what is wrong with your hiring practices? Sure, choose the most able applicants. No question about that.
But the problem may be that you are only advertising in newspaper 'A' which has a 97% white readership. If you included newspaper 'B', which has a 97% black readership, then maybe your application figures would be much different. Or not. It is little, inadvertent details like this that are the problem.