-63.97% is the change from 580 to 209
Calculation steps:
[( 209 - 580 ) ÷ 580] x 100 = -63.97%
Formula
Percentage change = [(209 - 580) / 580] x 100
Subtract the new number by the original number
209 - 580 = -371
-371 ÷ 580 = -0.6396551724137931
-0.6396551724137931 x 100 = -63.97%