| Region | GDHI per head (£) |
|---|---|
| London | 33,600 |
| South East | 28,200 |
| West Midlands | 21,100 |
| Wales | 19,800 |
| North East | 19,400 |
Use Extract D to calculate, as a percentage, how much Gross Disposable Household Income (GDHI) per head in the poorest region would need to rise to equal the GDHI per head in the richest region.
Give your answer to the nearest whole percent (%).