14.97% is the change from 521 to 599
Calculation steps:
[( 599 - 521 ) ÷ 521] x 100 = 14.97%
Formula
Percentage change = [(599 - 521) / 521] x 100
Subtract the new number by the original number
599 - 521 = 78
78 ÷ 521 = 0.14971209213051823
0.14971209213051823 x 100 = 14.97%