-31.29% is the change from 489 to 336
Calculation steps:
[( 336 - 489 ) ÷ 489] x 100 = -31.29%
Formula
Percentage change = [(336 - 489) / 489] x 100
Subtract the new number by the original number
336 - 489 = -153
-153 ÷ 489 = -0.3128834355828221
-0.3128834355828221 x 100 = -31.29%