52.34% is the change from 321 to 489
Calculation steps:
[( 489 - 321 ) ÷ 321] x 100 = 52.34%
Formula
Percentage change = [(489 - 321) / 321] x 100
Subtract the new number by the original number
489 - 321 = 168
168 ÷ 321 = 0.5233644859813084
0.5233644859813084 x 100 = 52.34%