-17.2% is the change from 971 to 804
Calculation steps:
[( 804 - 971 ) ÷ 971] x 100 = -17.2%
Formula
Percentage change = [(804 - 971) / 971] x 100
Subtract the new number by the original number
804 - 971 = -167
-167 ÷ 971 = -0.17198764160659114
-0.17198764160659114 x 100 = -17.2%