-69.53% is the change from 489 to 149
Calculation steps:
[( 149 - 489 ) ÷ 489] x 100 = -69.53%
Formula
Percentage change = [(149 - 489) / 489] x 100
Subtract the new number by the original number
149 - 489 = -340
-340 ÷ 489 = -0.6952965235173824
-0.6952965235173824 x 100 = -69.53%