77.35% is the change from 521 to 924
Calculation steps:
[( 924 - 521 ) ÷ 521] x 100 = 77.35%
Formula
Percentage change = [(924 - 521) / 521] x 100
Subtract the new number by the original number
924 - 521 = 403
403 ÷ 521 = 0.7735124760076776
0.7735124760076776 x 100 = 77.35%