18.23% is the change from 521 to 616
Calculation steps:
[( 616 - 521 ) ÷ 521] x 100 = 18.23%
Formula
Percentage change = [(616 - 521) / 521] x 100
Subtract the new number by the original number
616 - 521 = 95
95 ÷ 521 = 0.18234165067178504
0.18234165067178504 x 100 = 18.23%