-90.46% is the change from 566 to 54
Calculation steps:
[( 54 - 566 ) ÷ 566] x 100 = -90.46%
Formula
Percentage change = [(54 - 566) / 566] x 100
Subtract the new number by the original number
54 - 566 = -512
-512 ÷ 566 = -0.9045936395759717
-0.9045936395759717 x 100 = -90.46%