70.55% is the change from 489 to 834
Calculation steps:
[( 834 - 489 ) ÷ 489] x 100 = 70.55%
Formula
Percentage change = [(834 - 489) / 489] x 100
Subtract the new number by the original number
834 - 489 = 345
345 ÷ 489 = 0.7055214723926381
0.7055214723926381 x 100 = 70.55%