title: Replace percent (symbol and value) and brackets
body: <p>I receive from the client a string like this one:</p>
  
  <pre><code>"a, b, c, d 5%, e, f, g 76%, h (string,string), i"
  </code></pre>
  
  <p>I want to create a regExp that can remove from the string 5%, 76% (and any other possible percent value n%) and the brackets (bracket opening is replaced by comma). The desired result is:</p>
  
  <pre><code>"a, b, c, d, e, f, g, h, string, string, i"
  </code></pre>
  
  <p>Is this possible with PHP?</p>