18% is the change from 489 to 577
Calculation steps:
[( 577 - 489 ) ÷ 489] x 100 = 18%
Formula
Percentage change = [(577 - 489) / 489] x 100
Subtract the new number by the original number
577 - 489 = 88
88 ÷ 489 = 0.17995910020449898
0.17995910020449898 x 100 = 18%