27.06% is the change from 521 to 662
Calculation steps:
[( 662 - 521 ) ÷ 521] x 100 = 27.06%
Formula
Percentage change = [(662 - 521) / 521] x 100
Subtract the new number by the original number
662 - 521 = 141
141 ÷ 521 = 0.2706333973128599
0.2706333973128599 x 100 = 27.06%