-52.4% is the change from 584 to 278
Calculation steps:
[( 278 - 584 ) ÷ 584] x 100 = -52.4%
Formula
Percentage change = [(278 - 584) / 584] x 100
Subtract the new number by the original number
278 - 584 = -306
-306 ÷ 584 = -0.523972602739726
-0.523972602739726 x 100 = -52.4%