59.12% is the change from 521 to 829
Calculation steps:
[( 829 - 521 ) ÷ 521] x 100 = 59.12%
Formula
Percentage change = [(829 - 521) / 521] x 100
Subtract the new number by the original number
829 - 521 = 308
308 ÷ 521 = 0.5911708253358925
0.5911708253358925 x 100 = 59.12%