-82.18% is the change from 971 to 173
Calculation steps:
[( 173 - 971 ) ÷ 971] x 100 = -82.18%
Formula
Percentage change = [(173 - 971) / 971] x 100
Subtract the new number by the original number
173 - 971 = -798
-798 ÷ 971 = -0.8218331616889805
-0.8218331616889805 x 100 = -82.18%