-12.36% is the change from 971 to 851
Calculation steps:
[( 851 - 971 ) ÷ 971] x 100 = -12.36%
Formula
Percentage change = [(851 - 971) / 971] x 100
Subtract the new number by the original number
851 - 971 = -120
-120 ÷ 971 = -0.12358393408856849
-0.12358393408856849 x 100 = -12.36%