-49.59% is the change from 970 to 489
Calculation steps:
[( 489 - 970 ) ÷ 970] x 100 = -49.59%
Formula
Percentage change = [(489 - 970) / 970] x 100
Subtract the new number by the original number
489 - 970 = -481
-481 ÷ 970 = -0.49587628865979383
-0.49587628865979383 x 100 = -49.59%