how to convert absolute path to relative Application.DataPath

GetFiles function returns this path:

E:/Users/Tuone/Downloads/CharacterCustomization/CharacterCustomization/Assets\DressingroomExample\dressing_room extures\floor_wood.tga

how do i convert it to the relative Application.DataPath, i.e. from Assets word onwards?

if (absolutepath.StartsWith(Application.dataPath)) {
relativepath= “Assets” + absolutepath.Substring(Application.dataPath.Length);
}