14.4% is the change from 521 to 596
Calculation steps:
[( 596 - 521 ) ÷ 521] x 100 = 14.4%
Formula
Percentage change = [(596 - 521) / 521] x 100
Subtract the new number by the original number
596 - 521 = 75
75 ÷ 521 = 0.14395393474088292
0.14395393474088292 x 100 = 14.4%