(ii) Any increase in the assessment of a property due to an increase in a property's full value or physical changes subsequent to the two thousand twenty--two thousand twenty-one final assessment roll shall not be eligible for the exemption. If any portion of a property is fully or partially removed from the assessment roll subsequent to the two thousand twenty--two thousand twenty-one final assessment roll by reason of fire, demolition, destruction or new exemption, the assessor shall reduce the exemption for any remaining portion in the same proportion the assessment is reduced for such fire, demolition, destruction or new exemption.

(b) The exemption shall be eighty per centum of the exemption base on the two thousand twenty--two thousand twenty-one final assessment roll, sixty per centum of the exemption base on the two thousand twenty-one--two thousand twenty-two final assessment roll, forty per centum of the exemption base on the two thousand twenty-two--two thousand twenty-three final assessment roll, twenty per centum of the exemption base on the two thousand twenty-three--two thousand twenty-four final assessment roll and zero per centum of the exemption base on the two thousand twenty-four--two thousand twenty-five final assessment roll. 4. Entering of exemption on assessment roll. The assessor shall enter in a separate column on the assessment roll the value of any exemption provided by this section.