The metric type "1951 - Age 30 to 44 - percentage of ONS population count" value of 17.23 % for area East Sussex (County) 2011 is calculated from:
90,763 divided by 526,671 multiplied by 100.00
"1933 - Age 30 to 44" divided by "1798 - Number of all usual residents" multiplied by 100.00