CKEDITOR converting special characters

I have a problem with CKEditor. It is converting all special characters even using HTMl codes. I want it to save as a special character.

I enter text like this:

<a href="https://api.whatsapp.com/send?phone=seunumerodetelefone&text=sua%20mensagem">Chamar no WhatsApp</a>

CKEditor saves:

**<a href="https://api.whatsapp.com/send?phone=seunumerodetelefone&text=sua%20mensagem">Chamar no WhatsApp</a>**

Configuration:

$(function () {

    CKEDITOR.replace('texto');
    CKEDITOR.editorConfig = function(config) {
      config.entities_additional = "<,">";
      config.htmlEncodeOutput = false; 
      config.entities = false;  
  };

Someone knows what's going on.