-49.85% is the change from 975 to 489
Calculation steps:
[( 489 - 975 ) ÷ 975] x 100 = -49.85%
Formula
Percentage change = [(489 - 975) / 975] x 100
Subtract the new number by the original number
489 - 975 = -486
-486 ÷ 975 = -0.49846153846153846
-0.49846153846153846 x 100 = -49.85%