去掉百分号，小数点向左移动两位。

Take out percent sign, move decimal points two places to the left.

它们使用百分号（%）而不是与字符，可以是命名实体或外部实体。

They use the percent (%) symbol instead of the ampersand, and can be either named entities or external entities.

所以就像我们采用笨拙的方式来用反斜杠来避免一些东西，在这个背景下对百分号做相同的处理。

So just as we had to escape things with backslashes in an awkward way, same deal with percent in this context.