-41.55% is the change from 580 to 339
Calculation steps:
[( 339 - 580 ) ÷ 580] x 100 = -41.55%
Formula
Percentage change = [(339 - 580) / 580] x 100
Subtract the new number by the original number
339 - 580 = -241
-241 ÷ 580 = -0.41551724137931034
-0.41551724137931034 x 100 = -41.55%