It happens that Wikipedia doesn't care whether parens are percent-encoded or not. So yes, you can use %28%29 instead (), but that's despite them being sub-delim

It happens that Wikipedia doesn't care whether parens are percent-encoded or not. So yes, you can use %28%29 instead (), but that's despite them being sub-delims. For example, you definitely should change & (another sub-delim) to %26 in your URLs. And, as I noted earlier, escaping parens wouldn't even help in this case, because it's an underscore that causes the mess.