我如何解码post方法网址？

Question

i want to send an post method request without enconding anything, For example when i am submit this form the browser encoding the % to %25 so how can i fix it.

<form action="https://e.target.com/i" method="POST" >
  <input type="hidden" name="redirect" value="https://m.ex.com/?t=%20" />
  <input type="submit" value="Submit request" />
</form>