Can be very hard depending on the location of the existing piping.

Is this toilet on the 3rd floor or in the basement ?

Is the piping under a concrete slab?

Are you moving it several inches or several feet and do you have enough pitch for the new location.

how far away is the new vent and water supply lines?

Is there another waste connecting to the lead bend like a bath tub or shower?

What type or material is there now and the size?