The relative percent increase can be calculated dividing the absolute change in the population over the initial value.
The absolute increase is:
![5550-3250=2300](https://img.qammunity.org/2023/formulas/mathematics/high-school/7xakv7fb52ntzoz75mc47vk0fx9bsamrr5.png)
The relative percent increase is then given by:
![(2300)/(3250)\cdot100=70.77](https://img.qammunity.org/2023/formulas/mathematics/high-school/2igcpo25gthv90wokhb0grgq9hwo6pxcj2.png)
Therefore, the absolute increase was 2,300, and the relative percent increase was 70.8%.