The Solution Analysis view is useful for determining the sensitivity of decision variables with respect to the model’s objective. When viewing the best solutions for an optimization, compare the relative size of the ranges for each of your decision variables. Generally speaking, a decision variable with a smaller relative range indicates that it has a greater impact on the objective. This is because small changes in the decision variable can force the solutions to be less than optimal. Conversely, a decision variable with a wider relative range indicates that is has a lesser impact on the objective since different values do not seem to alter the set of best solutions.
These are general guidelines only. The results for your situation can be affected by the type and length of the optimization, the initial bounds defined for the decision variables, and other factors.