54.09% is the change from 538 to 829
Calculation steps:
[( 829 - 538 ) ÷ 538] x 100 = 54.09%
Formula
Percentage change = [(829 - 538) / 538] x 100
Subtract the new number by the original number
829 - 538 = 291
291 ÷ 538 = 0.5408921933085502
0.5408921933085502 x 100 = 54.09%