26.49% is the change from 521 to 659
Calculation steps:
[( 659 - 521 ) ÷ 521] x 100 = 26.49%
Formula
Percentage change = [(659 - 521) / 521] x 100
Subtract the new number by the original number
659 - 521 = 138
138 ÷ 521 = 0.2648752399232246
0.2648752399232246 x 100 = 26.49%