(a) On or before January 15 of the tax year, the assessor shall mail a notice of assessed value to any corporation, partnership, limited partnership, limited liability company, firm, association, company or other form of organization engaging in business activity in the county showing the aggregated assessed value of taxpayer's tangible personal property situated in the county on the assessment date, if known, that is not appraised by the Tax Commissioner: Provided, That notice is only required if:
(1) The aggregated assessed value of taxpayer's tangible personal property used in business activity is more than ten percent greater than the aggregated assessed value of the property in the prior tax year; and