42.23% is the change from 521 to 741
Calculation steps:
[( 741 - 521 ) ÷ 521] x 100 = 42.23%
Formula
Percentage change = [(741 - 521) / 521] x 100
Subtract the new number by the original number
741 - 521 = 220
220 ÷ 521 = 0.42226487523992323
0.42226487523992323 x 100 = 42.23%