-21.69% is the change from 581 to 455
Calculation steps:
[( 455 - 581 ) ÷ 581] x 100 = -21.69%
Formula
Percentage change = [(455 - 581) / 581] x 100
Subtract the new number by the original number
455 - 581 = -126
-126 ÷ 581 = -0.21686746987951808
-0.21686746987951808 x 100 = -21.69%