ii. the taxation year begins after 31 March 2015 but before 1 January 2017, to the total of(1) the proportion of 3.9% that the number of days in the taxation year that precede 1 January 2017 is of the number of days in the taxation year,
(1.1) the proportion of 3.8% that the number of days in the taxation year that follow 31 December 2016 but precede 1 January 2018 is of the number of days in the taxation year,
(1.2) the proportion of 3.7% that the number of days in the taxation year that follow 31 December 2017 is of the number of days in the taxation year, and
(2) the percentage determined by the formula
4% × (C – 25%)/25%.