-69.73% is the change from 489 to 148
Calculation steps:
[( 148 - 489 ) ÷ 489] x 100 = -69.73%
Formula
Percentage change = [(148 - 489) / 489] x 100
Subtract the new number by the original number
148 - 489 = -341
-341 ÷ 489 = -0.6973415132924335
-0.6973415132924335 x 100 = -69.73%