percentage sign in raw command

I am trying to add a key-value to %PATH% variable in windows and for that i am using a raw module. But when i use something like:

PATH=E:\jre;%PATH%

then i get error saying,

"%PATH% : The term ‘%PATH%’ is not recognized as the name of a cmdlet

I tried putting things in quote and there are no other special characters in my commands. I am not sure if special characters still needs to be escaped when inside “”. Any suggestions how to do this ?

I have no clue how this is for windows hosts, but normally I escape
things with a \ in ansible...

Johannes