-50.05% is the change from 979 to 489
Calculation steps:
[( 489 - 979 ) ÷ 979] x 100 = -50.05%
Formula
Percentage change = [(489 - 979) / 979] x 100
Subtract the new number by the original number
489 - 979 = -490
-490 ÷ 979 = -0.5005107252298263
-0.5005107252298263 x 100 = -50.05%