The best way to cover long numbers on small devices is to use the K, M, B values; such as 10K, 10.51M etc. 

As per layout try resizing this codepen, you'll get an idea https://codepen.io/geoffyuen/pen/FCBEg 

[This page][1] has couple of good examples to consider. 


  [1]: http://sitesforprofit.com/responsive-table-plugins-and-patterns