I remove the wheel to replace mine, but that was on my dirt bikes which were simple. I have yet to play with the rear (or front) on the hyper, but I assume the principle is the same. I would remove either the wheel or caliper to do this job. If you leave the caliper and wheel on it may be harder to depress the piston. Follow youtube videos as the basics should be the same. I'd image you'd do the following:
1) Remove caliper
2) Remove pin/screw holding the pads
3) Remove pads
4/5) Depress piston
4/5) Insert new pads
6) Screw back in the pin/screw to hold in the pads
7) Screw back on your calipers
8) Squeeze brake lever to put pressure back into the system
ALL DONE
I know some people like to scuff up their pads first or clean the rotors or calipers themselves. This is up to you. I usually just use contact/brake cleaner before re-assembling everything.
1) Remove caliper
2) Remove pin/screw holding the pads
3) Remove pads
4/5) Depress piston
4/5) Insert new pads
6) Screw back in the pin/screw to hold in the pads
7) Screw back on your calipers
8) Squeeze brake lever to put pressure back into the system
ALL DONE
I know some people like to scuff up their pads first or clean the rotors or calipers themselves. This is up to you. I usually just use contact/brake cleaner before re-assembling everything.