The table below shows the number of reported cases of tick-borne encephalitis (TBE) in Austria in 2011 and 2021.
| Number of reported cases of tick-borne encephalitis (TBE) in humans in Austria | |
|---|---|
| 2011 | 2021 |
| 3,200 | 8,800 |
Calculate the percentage increase in the number of reported cases of tick-borne encephalitis (TBE) in Austria from 2011 to 2021.