-4.8% is the change from 521 to 496
Calculation steps:
[( 496 - 521 ) ÷ 521] x 100 = -4.8%
Formula
Percentage change = [(496 - 521) / 521] x 100
Subtract the new number by the original number
496 - 521 = -25
-25 ÷ 521 = -0.04798464491362764
-0.04798464491362764 x 100 = -4.8%