53.29% is the change from 319 to 489
Calculation steps:
[( 489 - 319 ) ÷ 319] x 100 = 53.29%
Formula
Percentage change = [(489 - 319) / 319] x 100
Subtract the new number by the original number
489 - 319 = 170
170 ÷ 319 = 0.5329153605015674
0.5329153605015674 x 100 = 53.29%