The place of birth of the towns residents was 87.78% United Kingdom (including 61.80% from Scotland), 0.63% Republic of Ireland, 4.18% from other European Union countries, and 7.42% from elsewhere in the world. The economic activity of residents aged 16-74 was 23.94% in full-time employment, 8.52% in part-time employment, 4.73% self-employed, 1.94% unemployed, 31.14% students with jobs, 9.08% students without jobs, 13.24% retired, 2.91% looking after home or family, 2.84% permanently sick or disabled, and 1.67% economically inactive for other reasons.. How many more percentage of unemployed than self-employed?