Nov 27 (Reuters) - National Australia Bank Ltd NAB.AX :
* Nab confirms decision to pursue demerger and IPO of cybg NAB.AX
* Formally decided to proceed with demerger and proposed initial public offering (IPO) to institutional investors of CYBG PLC
* The proposed demerger and IPO remain subject to a range of matters
* Source text for Eikon ID:nASX8NPjDr