Same way you would change any other!

I always remove the "lower fascia" of the driver side dash and wedge a block of wood under the pedal (this gives an extra bit of slack so you can remove the cable from the pedal quadrant)

Feed through the bulkhead and through the bay and then you need to slide it one way in the release fork so it can be remove from the hole.

Refitting is a reversal of the above.

Be sure you take a note of the routing when removing the old one, or run the other one along side if not sure!

Martin