-49.74% is the change from 971 to 488
Calculation steps:
[( 488 - 971 ) ÷ 971] x 100 = -49.74%
Formula
Percentage change = [(488 - 971) / 971] x 100
Subtract the new number by the original number
488 - 971 = -483
-483 ÷ 971 = -0.49742533470648814
-0.49742533470648814 x 100 = -49.74%