Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Seattle
Table title:
Demographics
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Racial composition </th><th colspan=1 rowspan=1 > 2010 </th><th colspan=1 rowspan=1 > 1990 </th><th colspan=1 rowspan=1 > 1970 </th><th colspan=1 rowspan=1 > 1940 </th></tr>
<tr> <td colspan=1 rowspan=1 > White </td><td class="highlighted"  colspan=1 rowspan=1 > 69.5% </td><td colspan=1 rowspan=1 > 75.3% </td><td colspan=1 rowspan=1 > 87.4% </td><td colspan=1 rowspan=1 > 96.1% </td></tr>
<tr> <td colspan=1 rowspan=1 > —Non-Hispanic </td><td colspan=1 rowspan=1 > 66.3% </td><td colspan=1 rowspan=1 > 73.7% </td><td colspan=1 rowspan=1 > 85.3% </td><td colspan=1 rowspan=1 > n/a </td></tr>
<tr> <td colspan=1 rowspan=1 > Black or African American </td><td colspan=1 rowspan=1 > 7.9% </td><td colspan=1 rowspan=1 > 10.1% </td><td colspan=1 rowspan=1 > 7.1% </td><td colspan=1 rowspan=1 > 1.0% </td></tr>
<tr> <td colspan=1 rowspan=1 > Hispanic or Latino (of any race) </td><td colspan=1 rowspan=1 > 6.6% </td><td colspan=1 rowspan=1 > 3.6% </td><td colspan=1 rowspan=1 > 2.0% </td><td colspan=1 rowspan=1 > n/a </td></tr>
<tr> <td colspan=1 rowspan=1 > Asian </td><td colspan=1 rowspan=1 > 13.8% </td><td colspan=1 rowspan=1 > 11.8% </td><td colspan=1 rowspan=1 > 4.2% </td><td colspan=1 rowspan=1 > 2.8% </td></tr>
<tr> <td colspan=1 rowspan=1 > Other race </td><td colspan=1 rowspan=1 > 2.4% </td><td colspan=1 rowspan=1 > n/a </td><td colspan=1 rowspan=1 > n/a </td><td colspan=1 rowspan=1 > n/a </td></tr>
<tr> <td colspan=1 rowspan=1 > Two or more races </td><td colspan=1 rowspan=1 > 5.1% </td><td colspan=1 rowspan=1 > n/a </td><td colspan=1 rowspan=1 > n/a </td><td colspan=1 rowspan=1 > n/a </td></tr>
</table>
Question:
What is the Seattle's population change of whiles from 1940, 1970, 1990, and 2010?
Answer:
Whites comprised 96.1% of Seattle's population in 1940,  87.4% in 1970, 75.3% in 1990, and 69.5% in 2010,