11.9% is the change from 521 to 583
Calculation steps:
[( 583 - 521 ) ÷ 521] x 100 = 11.9%
Formula
Percentage change = [(583 - 521) / 521] x 100
Subtract the new number by the original number
583 - 521 = 62
62 ÷ 521 = 0.11900191938579655
0.11900191938579655 x 100 = 11.9%