-90.29% is the change from 577 to 56
Calculation steps:
[( 56 - 577 ) ÷ 577] x 100 = -90.29%
Formula
Percentage change = [(56 - 577) / 577] x 100
Subtract the new number by the original number
56 - 577 = -521
-521 ÷ 577 = -0.902946273830156
-0.902946273830156 x 100 = -90.29%