53.9% is the change from 538 to 828
Calculation steps:
[( 828 - 538 ) ÷ 538] x 100 = 53.9%
Formula
Percentage change = [(828 - 538) / 538] x 100
Subtract the new number by the original number
828 - 538 = 290
290 ÷ 538 = 0.5390334572490706
0.5390334572490706 x 100 = 53.9%