8.61% is the change from 511 to 555
Calculation steps:
[( 555 - 511 ) ÷ 511] x 100 = 8.61%
Formula
Percentage change = [(555 - 511) / 511] x 100
Subtract the new number by the original number
555 - 511 = 44
44 ÷ 511 = 0.08610567514677103
0.08610567514677103 x 100 = 8.61%