; or (iii) for any percentage under subparagraph (B)(ii)(III), neither increased or decreased. (B) Calculation The percentages in subparagraph (A) shall be calculated by— (i) determining the percentages under paragraphs (1)(B) and (2)(B); and (ii) in any case in which— (I) the percentage in paragraph (1)(B) is greater than the percentage in paragraph (2)(B), subtracting the percentage in paragraph (2)(B) from the percentage in paragraph (1)(B); (II) the percentage in paragraph (2)(B) is greater than the percentage in paragraph (1)(B), subtracting the percentage in paragraph (1)(B) from the percentage in paragraph (2)(B); or (III) the percentage in paragraph (1)(B) is the same as the percentage in paragraph (2)(B), subtracting the percentage in (1)(B) from the percentage in (2)(B). (4) Definitions For purposes of this subsection: (A) Affordable development The term affordable development means a housing development in which not less than 15 percent of the housing units of such development are affordable housing units. (B) Affordable housing unit The term affordable housing unit means a housing unit for which the amount of rent does not exceed 9 percent of the median household income of the area in which the unit is located, as determined by the Secretary. (C) Jurisdiction encouraging equitable growth The term jurisdiction encouraging equitable growth means any unit of State or local government that the Secretary determines has enacted and is enforcing any provision of law or regulation that— (i) allows an affordable development to contain a number of housing units greater than the number allowed by applicable laws or regulations for other housing developments; (ii) streamlines or shortens permitting processes and timelines for the construction of affordable developments; (iii) eliminates height restrictions for affordable developments