-9.39% is the change from 575 to 521
Calculation steps:
[( 521 - 575 ) ÷ 575] x 100 = -9.39%
Formula
Percentage change = [(521 - 575) / 575] x 100
Subtract the new number by the original number
521 - 575 = -54
-54 ÷ 575 = -0.09391304347826086
-0.09391304347826086 x 100 = -9.39%