Import a selected PANTONE sample to put into the left column
You just need to write the PANTONE number into the "search" area then you have to drag & drop the displayed color from the color table to the left column.
How to know the Delta E between two color
The last step is to select the reference color and to drag & drop the color to compare into the Delta Finder area.
Delta E value will appear below
Delta E selection
Choose the Delta E method among 2000, 94 and 76
Printed PANTONE Swatch books are less accurate than a digital swatch book because a printed swatch book don't have absolutes colors.
The measurement with a spectrophotometer is more accurate and is not disturbed by a visual comparaison in a wrong condition (a wrong illuminant e.g.)