-10.2% is the change from 971 to 872
Calculation steps:
[( 872 - 971 ) ÷ 971] x 100 = -10.2%
Formula
Percentage change = [(872 - 971) / 971] x 100
Subtract the new number by the original number
872 - 971 = -99
-99 ÷ 971 = -0.101956745623069
-0.101956745623069 x 100 = -10.2%