-47.44% is the change from 489 to 257
Calculation steps:
[( 257 - 489 ) ÷ 489] x 100 = -47.44%
Formula
Percentage change = [(257 - 489) / 489] x 100
Subtract the new number by the original number
257 - 489 = -232
-232 ÷ 489 = -0.47443762781186094
-0.47443762781186094 x 100 = -47.44%