The difference between two values divided by the average of the two values. Shown as a percentage.
Almost all species of the genus Calotis are native to Australia. One of these species is the Bindi-Eye (Calotis cuneifolia), also called the Purple Burr-daisy, a shrub-like herbaceous perennial that can be found growing throughout Australia, from the Northern Territory to New South Wales, Queensland and Victoria.
In the 1970s and early 1980s the Australian National Botanic Gardens (then known as Canberra Botanic Gardens) produced a landmark series of booklets called ' Growing Native Plants ', issuing one volume a year for 14 years.