JSFiddle - React, Tailwind, and code Playground
JavaScript
f='zqxjkvbpygfwmucldrhsnioate';a='abcdefghijklmnopqrstuvwxyz';for(s=prompt(o=m=n=0),i=27;i--;w>m&&(m=w,n=i,o=u))for(u='',w=c=0;c<s.length;w+=f.indexOf(x))u+=x=(a+a)[a.indexOf(s[c++])+i];alert((26-n)+' '+o)