-10.33% is the change from 581 to 521
Calculation steps:
[( 521 - 581 ) ÷ 581] x 100 = -10.33%
Formula
Percentage change = [(521 - 581) / 581] x 100
Subtract the new number by the original number
521 - 581 = -60
-60 ÷ 581 = -0.10327022375215146
-0.10327022375215146 x 100 = -10.33%