-33.95% is the change from 489 to 323
Calculation steps:
[( 323 - 489 ) ÷ 489] x 100 = -33.95%
Formula
Percentage change = [(323 - 489) / 489] x 100
Subtract the new number by the original number
323 - 489 = -166
-166 ÷ 489 = -0.3394683026584867
-0.3394683026584867 x 100 = -33.95%