9.98% is the change from 521 to 573
Calculation steps:
[( 573 - 521 ) ÷ 521] x 100 = 9.98%
Formula
Percentage change = [(573 - 521) / 521] x 100
Subtract the new number by the original number
573 - 521 = 52
52 ÷ 521 = 0.09980806142034548
0.09980806142034548 x 100 = 9.98%