예산 증감비율 계산식 아시는분 있나요?ㅠ

<TABLE style="BORDER-RIGHT: #000000 0.28pt solid; BORDER-TOP: #000000 0.28pt solid; BORDER-LEFT: #000000 0.28pt solid; BORDER-BOTTOM: #000000 0.28pt solid; BORDER-COLLAPSE: collapse"> <TBODY> <TR> <TD style="BORDER-RIGHT: #000000 0.28pt solid; BORDER-TOP: #000000 0.28pt solid; BORDER-LEFT: #000000 0.28pt solid; WIDTH: 76.58pt; BORDER-BOTTOM: #000000 0.28pt solid; HEIGHT: 5.64pt" vAlign=center rowSpan=2> 2009년</TD> <TD style="BORDER-RIGHT: #000000 0.28pt solid; BORDER-TOP: #000000 0.28pt solid; BORDER-LEFT: #000000 0.28pt solid; WIDTH: 76.58pt; BORDER-BOTTOM: #000000 0.28pt solid; HEIGHT: 5.64pt" vAlign=center rowSpan=2> 2010년</TD> <TD style="BORDER-RIGHT: #000000 0.28pt solid; BORDER-TOP: #000000 0.28pt solid; BORDER-LEFT: #000000 0.28pt solid; WIDTH: 150.34pt; BORDER-BOTTOM: #000000 0.28pt solid; HEIGHT: 2.82pt" vAlign=center colSpan=2> 증감</TD></TR> <TR> <TD style="BORDER-RIGHT: #000000 0.28pt solid; BORDER-TOP: #000000 0.28pt solid; BORDER-LEFT: #000000 0.28pt solid; WIDTH: 75.17pt; BORDER-BOTTOM: #000000 0.28pt solid; HEIGHT: 2.82pt" vAlign=center> 액수</TD> <TD style="BORDER-RIGHT: #000000 0.28pt solid; BORDER-TOP: #000000 0.28pt solid; BORDER-LEFT: #000000 0.28pt solid; WIDTH: 75.17pt; BORDER-BOTTOM: #000000 0.28pt solid; HEIGHT: 2.82pt" vAlign=center> 비율(%)</TD></TR> <TR> <TD style="BORDER-RIGHT: #000000 0.28pt solid; BORDER-TOP: #000000 0.28pt solid; BORDER-LEFT: #000000 0.28pt solid; WIDTH: 76.58pt; BORDER-BOTTOM: #000000 0.28pt solid; HEIGHT: 22.26pt" vAlign=center> 476</TD> <TD style="BORDER-RIGHT: #000000 0.28pt solid; BORDER-TOP: #000000 0.28pt solid; BORDER-LEFT: #000000 0.28pt solid; WIDTH: 76.58pt; BORDER-BOTTOM: #000000 0.28pt solid; HEIGHT: 22.26pt" vAlign=center> 550</TD> <TD style="BORDER-RIGHT: #000000 0.28pt solid; BORDER-TOP: #000000 0.28pt solid; BORDER-LEFT: #000000 0.28pt solid; WIDTH: 75.17pt; BORDER-BOTTOM: #000000 0.28pt solid; HEIGHT: 22.26pt" vAlign=center> 74</TD> <TD style="BORDER-RIGHT: #000000 0.28pt solid; BORDER-TOP: #000000 0.28pt solid; BORDER-LEFT: #000000 0.28pt solid; WIDTH: 75.17pt; BORDER-BOTTOM: #000000 0.28pt solid; HEIGHT: 22.26pt" vAlign=center> 15.5</TD></TR> <TR> <TD style="BORDER-RIGHT: #000000 0.28pt solid; BORDER-TOP: #000000 0.28pt solid; BORDER-LEFT: #000000 0.28pt solid; WIDTH: 76.58pt; BORDER-BOTTOM: #000000 0.28pt solid; HEIGHT: 22.26pt" vAlign=center> 171</TD> <TD style="BORDER-RIGHT: #000000 0.28pt solid; BORDER-TOP: #000000 0.28pt solid; BORDER-LEFT: #000000 0.28pt solid; WIDTH: 76.58pt; BORDER-BOTTOM: #000000 0.28pt solid; HEIGHT: 22.26pt" vAlign=center> 166</TD> <TD style="BORDER-RIGHT: #000000 0.28pt solid; BORDER-TOP: #000000 0.28pt solid; BORDER-LEFT: #000000 0.28pt solid; WIDTH: 75.17pt; BORDER-BOTTOM: #000000 0.28pt solid; HEIGHT: 22.26pt" vAlign=center> △5</TD> <TD style="BORDER-RIGHT: #000000 0.28pt solid; BORDER-TOP: #000000 0.28pt solid; BORDER-LEFT: #000000 0.28pt solid; WIDTH: 75.17pt; BORDER-BOTTOM: #000000 0.28pt solid; HEIGHT: 22.26pt" vAlign=center> △3.0</TD></TR></TBODY></TABLE>   증감 비율 계산식 아시는분 알려주세요.. 근데 이런 질문도 올려도 되는건지.... 아시는분 부탁드려요..ㅠ