6.53% is the change from 505 to 538
Calculation steps:
[( 538 - 505 ) ÷ 505] x 100 = 6.53%
Formula
Percentage change = [(538 - 505) / 505] x 100
Subtract the new number by the original number
538 - 505 = 33
33 ÷ 505 = 0.06534653465346535
0.06534653465346535 x 100 = 6.53%