AN ORDINANCE AMENDING ITEM 20 OF SECTION 323, CHAPTER 80, TITLE XIII (LOCAL TAXATION) OF ORDINANCE NO. 4373-94, OTHERWISE KNOWN AS THE CODIFIED ORDINANCE OF CAGAYAN DE ORO CITY, IN THE MANNER PROVIDED FOR HEREIN SO AS TO PROVIDE A FIXED AMUSEMENT TAX RATE ON COCKFIGHTS, HACKFIGHTS AND DERBIES AND FOR OTHER PURPOSES