9.85% is the change from 538 to 591
Calculation steps:
[( 591 - 538 ) ÷ 538] x 100 = 9.85%
Formula
Percentage change = [(591 - 538) / 538] x 100
Subtract the new number by the original number
591 - 538 = 53
53 ÷ 538 = 0.09851301115241635
0.09851301115241635 x 100 = 9.85%