-8.24% is the change from 971 to 891
Calculation steps:
[( 891 - 971 ) ÷ 971] x 100 = -8.24%
Formula
Percentage change = [(891 - 971) / 971] x 100
Subtract the new number by the original number
891 - 971 = -80
-80 ÷ 971 = -0.082389289392379
-0.082389289392379 x 100 = -8.24%