-21.72% is the change from 580 to 454
Calculation steps:
[( 454 - 580 ) ÷ 580] x 100 = -21.72%
Formula
Percentage change = [(454 - 580) / 580] x 100
Subtract the new number by the original number
454 - 580 = -126
-126 ÷ 580 = -0.21724137931034482
-0.21724137931034482 x 100 = -21.72%