To solve this problem, you can use algebra.
Since you want to find out what the percent of increase is, the algebraic equation would be:
original value x factor of change = final value
For this problem, the original value is 5,990 (there were 5,990 people to start with). The final value is 9,584. So now you have to find the percentage that changed.
1) make algebraic equation and solve
let f represent factor of change
5,990 x f = 9,584 <--- use isolate variable method to solve
5,990 x f = 9,584
5,990 5,990
f = 9,584
5,990
f = 1.6 <--- so the factor of change is 1.6
2) Turn it into percentage
1.6 x 100 = 160
3) Find out how much it increased by
160
-100 60% increase.
60
The percent of increase in Oak Grove's population is 60%.