-21.92% is the change from 584 to 456
Calculation steps:
[( 456 - 584 ) ÷ 584] x 100 = -21.92%
Formula
Percentage change = [(456 - 584) / 584] x 100
Subtract the new number by the original number
456 - 584 = -128
-128 ÷ 584 = -0.2191780821917808
-0.2191780821917808 x 100 = -21.92%