-17.82% is the change from 971 to 798
Calculation steps:
[( 798 - 971 ) ÷ 971] x 100 = -17.82%
Formula
Percentage change = [(798 - 971) / 971] x 100
Subtract the new number by the original number
798 - 971 = -173
-173 ÷ 971 = -0.17816683831101957
-0.17816683831101957 x 100 = -17.82%