% encrypting

Hi, I want encrypt a lot of code in this way:
@echo off
title 4chan
pause

to

%k%e%k%c%k%h%k%o%k% %k%o%k%f%k%f%k%
%k%t%k%i%k%t%k%l%k%e%k% %k%4%k%c%k%h%k%a%k%n%k%
%k%p%k%a%k%u%k%s%k%e%k%

How to simply do it ?

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