71.78% is the change from 489 to 840
Calculation steps:
[( 840 - 489 ) ÷ 489] x 100 = 71.78%
Formula
Percentage change = [(840 - 489) / 489] x 100
Subtract the new number by the original number
840 - 489 = 351
351 ÷ 489 = 0.7177914110429447
0.7177914110429447 x 100 = 71.78%