16.7% is the change from 521 to 608
Calculation steps:
[( 608 - 521 ) ÷ 521] x 100 = 16.7%
Formula
Percentage change = [(608 - 521) / 521] x 100
Subtract the new number by the original number
608 - 521 = 87
87 ÷ 521 = 0.16698656429942418
0.16698656429942418 x 100 = 16.7%