get CSS rule's percentage value in jQuery

Question

Let\'s say the rule is as follows:

.largeField {
    width: 65%;
}

Is there a way to get \'65%\' back somehow, and not the pixel value?

Answer 1

Convert from pixels to percentage using cross multiplication.

Formula Setup:

1.) (element_width_pixels/parent_width_pixels) = (element_width_percentage / 100)

2.) element_width_percentage = (100 * element_width_pixels) / parent_width_pixels

The actual code: