-39.55% is the change from 971 to 587
Calculation steps:
[( 587 - 971 ) ÷ 971] x 100 = -39.55%
Formula
Percentage change = [(587 - 971) / 971] x 100
Subtract the new number by the original number
587 - 971 = -384
-384 ÷ 971 = -0.39546858908341914
-0.39546858908341914 x 100 = -39.55%