A high percentage of the solute forms ions in solution. Examples are aqueous solutions of NaCl and other salts, hydrochloric acid, sodium hydroxide, etc. Only a small percentage of the solute forms ions. Examples are acetic acid and ammonium hydroxide. There is essentially zero percentage ionization.
Examples are sugar water and alcohol in water.
Three types of compounds that act as electrolytes are acids , bases , and salts. When an equilibrium is disturbed by a change in conditions, it will react in a way to try to restore equilibrium.