General condition:

If the data is being added or subtracted by the same value, there exist increasing or decreasing nature of value of arising in the measures of center and it leaves the measures of spread unchanged.

Interpretation:

The value 49.23 percent are subtracted from the predicted job growths for each rates, the mean and median also decreased by 49.23 and it leaves the standard deviation and the interquartile range remains constant(unchanged). There is no change in the measures of dispersion.

If the data is being added or subtracted by the same value, there exist increasing or decreasing nature of value of arising in the measures of center and it leaves the measures of spread unchanged.

Interpretation:

The value 49.23 percent are subtracted from the predicted job growths for each rates, the mean and median also decreased by 49.23 and it leaves the standard deviation and the interquartile range remains constant(unchanged). There is no change in the measures of dispersion.