-90.36% is the change from 581 to 56
Calculation steps:
[( 56 - 581 ) ÷ 581] x 100 = -90.36%
Formula
Percentage change = [(56 - 581) / 581] x 100
Subtract the new number by the original number
56 - 581 = -525
-525 ÷ 581 = -0.9036144578313253
-0.9036144578313253 x 100 = -90.36%