I am trying to insert HTML tables into the description field of the V3 API.

I have working HTML from the V2 API but this does not work now in V3.

After much testing I have found that I cannot have a "%" symbol anywhere in the code.

For example:

This line of HTML will work correctly:

<table align="center" style="border: 1px solid black; width: 100px;"><tr><td><h2 style="color:blue;">HTML example<h2></td></tr></table>

This line does not work

<table align="center" style="border: 1px solid black; width: 50%; "><tr><td><h2 style="color:blue;">HTML example<h2></td></tr></table>

Is there a way to do this or a way to escape the "%" so that the code works correctly?