43.76% is the change from 521 to 749
Calculation steps:
[( 749 - 521 ) ÷ 521] x 100 = 43.76%
Formula
Percentage change = [(749 - 521) / 521] x 100
Subtract the new number by the original number
749 - 521 = 228
228 ÷ 521 = 0.43761996161228406
0.43761996161228406 x 100 = 43.76%