Try this
<table style="font-family:Arial; font-size:12pt; border-style: groove ;border-color:#0000FF;background-color:#fffcf9; color:#000000; "><tr><td ><b>Sheet1</b></td></tr></table>
<table border="1" cellspacing="0" style="font-family:Calibri,Arial; font-size:8pt; background-color:#ffffff; "> <colgroup><col style="font-weight:bold; width:30px; " /><col style="width:100.75px;" /><col style="width:100.75px;" /><col style="width:81.74px;" /></colgroup><tr style="background-color:#cacaca; text-align:center; font-weight:bold; font-size:8pt; "><td > </td><td >A</td><td >B</td><td >C</td></tr><tr style="height:25px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >1</td><td style="background-color:#ffff00; font-size:11pt; ">TICKET NUMBER</td><td style="background-color:#ffff00; font-size:11pt; ">OLD STATUS</td><td style="background-color:#ffff00; font-size:11pt; ">NEW STATUS</td></tr><tr style="height:25px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >2</td><td style="font-size:11pt; text-align:right; ">123</td><td style="font-size:11pt; ">Proc</td><td style="font-size:11pt; ">Changed</td></tr><tr style="height:25px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >3</td><td style="font-size:11pt; text-align:right; ">456</td><td style="font-size:11pt; ">Rep</td><td style="font-size:11pt; ">Same</td></tr><tr style="height:25px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >4</td><td style="font-size:11pt; text-align:right; ">789</td><td style="font-size:11pt; ">Can</td><td style="font-size:11pt; ">Same</td></tr><tr style="height:25px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >5</td><td style="font-size:11pt; text-align:right; ">888</td><td style="font-size:11pt; ">Bloq</td><td style="font-size:11pt; ">Dont exists</td></tr></table><br /><table style="font-family:Arial; font-size:10pt; border-style: groove ;border-color:#00ff00;background-color:#fffcf9; color:#000000; "><tr><td ><b></b></td></tr><tr><td ><table border = "1" cellspacing="0" cellpadding="2" style="font-family:Arial; font-size:9pt;"><tr style="background-color:#cacaca; font-size:10pt;"><td >Cell</td><td >Formula</td></tr><tr><td >C2</td><td >=IFERROR(IF(VLOOKUP(A2,Sheet2!A:B,2,0)=Sheet1!B2,"Same","Changed"),"Dont exists")</td></tr></table></td></tr></table>
<table style="font-family:Arial; font-size:12pt; border-style: groove ;border-color:#0000FF;background-color:#fffcf9; color:#000000; "><tr><td ><b>Sheet2</b></td></tr></table>
<br /><table border="1" cellspacing="0" style="font-family:Calibri,Arial; font-size:8pt; background-color:#ffffff; "> <colgroup><col style="font-weight:bold; width:30px; " /><col style="width:100.75px;" /><col style="width:102.65px;" /></colgroup><tr style="background-color:#cacaca; text-align:center; font-weight:bold; font-size:8pt; "><td > </td><td >A</td><td >B</td></tr><tr style="height:25px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >1</td><td style="background-color:#ffff00; font-size:11pt; ">TICKET NUMBER</td><td style="background-color:#ffff00; font-size:11pt; ">STATUS</td></tr><tr style="height:25px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >2</td><td style="font-size:11pt; text-align:right; ">123</td><td style="font-size:11pt; ">Bloq</td></tr><tr style="height:25px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >3</td><td style="font-size:11pt; text-align:right; ">456</td><td style="font-size:11pt; ">Rep</td></tr><tr style="height:25px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >4</td><td style="font-size:11pt; text-align:right; ">789</td><td style="font-size:11pt; ">Can</td></tr></table>