-65.03% is the change from 489 to 171
Calculation steps:
[( 171 - 489 ) ÷ 489] x 100 = -65.03%
Formula
Percentage change = [(171 - 489) / 489] x 100
Subtract the new number by the original number
171 - 489 = -318
-318 ÷ 489 = -0.6503067484662577
-0.6503067484662577 x 100 = -65.03%