To remove tile from the wall, cut the grout with a utility knife, loosen the tile with a chisel, and pry the tile loose with a putty knife. Remove additional tiles using the same method, and remove remaining grout or debris using a paint scraper.
Place a drop cloth or plastic sheeting on the floor, and wear safety goggles and gloves to prevent injuries caused by tile shards. To loosen the tiles, cut through the grout on each side of a single tile using a utility knife. To further loosen the tile, place a chisel on the grouted edge of the tile, and tap the chisel with a hammer.
Continue chiseling along each of the outside edges of the tile to loosen it on each side. After the grout is loosened, use a hammer to gently tap a putty knife behind the tile. Lift the putty knife upward to remove the tile from the wall. Repeat the removal process for each tile, working outward from the first removed tile.
To remove grout or other debris left on the wall, use a paint scraper. Repair holes in the wall with spackling putty, and sand the wall with medium-grit sandpaper to smooth the surface before installing new tile.