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.
Telopea speciosissima - New South Wales native Waratah. The flower is as big as a coconut and grows on the end of a tall stalk. Photographed in the Blue Mountains west of Sydney Australia, along the Grand Canyon Loop Trail.