context: According to the United Kingdom Census 2011, 82.5% of Peterboroughs residents categorised themselves as White people, 2.8% of Mixed (United Kingdom ethnicity category), 11.7% British Asian, 2.3 per cent Black British and 0.8% other. Amongst the white population, the largest categories were English/Welsh/Scottish/Northern Irish/British (70.9%) and Other White (10.6%). Those of British Pakistanis ethnicity accounted for 6.6% of the population and those of British Indians 2.5.%. The largest black group were those of African ethnicity (1.4%).
question: How many more people, in terms of percentage, belonged to the largest racial group compared to the second largest?
answer: 70.8