Statistical method to compare two experiments

I have two data from biological experiment where two types of cells were measured. For each cell the data about composition of the membrane where extracted under different condition of the experiment (repeated 3 times), composition is in percentage, so sum of each column is 100%.
I would like to ask for an advice of any statistical method that could be used to compare this two data sets to check the data variability and make a conclusion that for example under the experiment condition with pH x, wild type cell have more comp1 compared to mutant cells.
The only idea I had was to calculate VMR but maybe somebody will have a better idea?