69.94% is the change from 489 to 831
Calculation steps:
[( 831 - 489 ) ÷ 489] x 100 = 69.94%
Formula
Percentage change = [(831 - 489) / 489] x 100
Subtract the new number by the original number
831 - 489 = 342
342 ÷ 489 = 0.6993865030674846
0.6993865030674846 x 100 = 69.94%