42.61% is the change from 521 to 743
Calculation steps:
[( 743 - 521 ) ÷ 521] x 100 = 42.61%
Formula
Percentage change = [(743 - 521) / 521] x 100
Subtract the new number by the original number
743 - 521 = 222
222 ÷ 521 = 0.42610364683301344
0.42610364683301344 x 100 = 42.61%