The yearly changes in the population census of a town for four consecutive years are, respectively, $25\%$ increase, $25\%$ increase, $25\%$ decrease, $25\%$ decrease. Find the net change over the four years, to the nearest percent. If the net change is $x\%$, what is the value of $x$?

Let's think step by step and output the final answer within \boxed{}.
user