-5.57% is the change from 521 to 492
Calculation steps:
[( 492 - 521 ) ÷ 521] x 100 = -5.57%
Formula
Percentage change = [(492 - 521) / 521] x 100
Subtract the new number by the original number
492 - 521 = -29
-29 ÷ 521 = -0.05566218809980806
-0.05566218809980806 x 100 = -5.57%