13.5% is the change from 489 to 555
Calculation steps:
[( 555 - 489 ) ÷ 489] x 100 = 13.5%
Formula
Percentage change = [(555 - 489) / 489] x 100
Subtract the new number by the original number
555 - 489 = 66
66 ÷ 489 = 0.13496932515337423
0.13496932515337423 x 100 = 13.5%