(a) The owner of business tangible personal property that is valued by the assessor or the person in whose possession it is found on the assessment date may appeal to the assessor within eight business days after the date the notice of increased assessment required by section fifteen-b of this article was received by filing a petition with the assessor on a form prescribed by the Tax Commissioner. For purposes of this section, >business day' means any day other than Saturday, Sunday or any legal holiday set forth in section one, article two, chapter two of this code. The petition shall set forth in writing:
(1) The taxpayer's opinion of the value of the tangible personal property; and