-49.64% is the change from 971 to 489
Calculation steps:
[( 489 - 971 ) ÷ 971] x 100 = -49.64%
Formula
Percentage change = [(489 - 971) / 971] x 100
Subtract the new number by the original number
489 - 971 = -482
-482 ÷ 971 = -0.4963954685890834
-0.4963954685890834 x 100 = -49.64%