-35.58% is the change from 489 to 315
Calculation steps:
[( 315 - 489 ) ÷ 489] x 100 = -35.58%
Formula
Percentage change = [(315 - 489) / 489] x 100
Subtract the new number by the original number
315 - 489 = -174
-174 ÷ 489 = -0.3558282208588957
-0.3558282208588957 x 100 = -35.58%