-87.64% is the change from 971 to 120
Calculation steps:
[( 120 - 971 ) ÷ 971] x 100 = -87.64%
Formula
Percentage change = [(120 - 971) / 971] x 100
Subtract the new number by the original number
120 - 971 = -851
-851 ÷ 971 = -0.8764160659114315
-0.8764160659114315 x 100 = -87.64%