42.03% is the change from 521 to 740
Calculation steps:
[( 740 - 521 ) ÷ 521] x 100 = 42.03%
Formula
Percentage change = [(740 - 521) / 521] x 100
Subtract the new number by the original number
740 - 521 = 219
219 ÷ 521 = 0.42034548944337813
0.42034548944337813 x 100 = 42.03%