4.29% is the change from 489 to 510
Calculation steps:
[( 510 - 489 ) ÷ 489] x 100 = 4.29%
Formula
Percentage change = [(510 - 489) / 489] x 100
Subtract the new number by the original number
510 - 489 = 21
21 ÷ 489 = 0.04294478527607362
0.04294478527607362 x 100 = 4.29%