-82.29% is the change from 971 to 172
Calculation steps:
[( 172 - 971 ) ÷ 971] x 100 = -82.29%
Formula
Percentage change = [(172 - 971) / 971] x 100
Subtract the new number by the original number
172 - 971 = -799
-799 ÷ 971 = -0.8228630278063852
-0.8228630278063852 x 100 = -82.29%