Why is percentage change in mass more informative than simple change in mass when using artificial cells?

Percentage change in mass provides a more informative metric than simple change in mass because it takes into account the relative size of the artificial cells. This is particularly important in experiments involving artificial cells, as their sizes may vary. By using percentage change, researchers can assess the impact of factors such as osmotic pressure or solute concentration in relation to the initial mass of each cell, rather than relying on an absolute mass difference that could be misleading if the cells differ significantly in size. This method allows for a more accurate comparison of results across different trials and conditions, ensuring that the observed effects are truly due to the experimental variables and not confounded by the size variations of the cells.