-82.37% is the change from 970 to 171
Calculation steps:
[( 171 - 970 ) ÷ 970] x 100 = -82.37%
Formula
Percentage change = [(171 - 970) / 970] x 100
Subtract the new number by the original number
171 - 970 = -799
-799 ÷ 970 = -0.8237113402061855
-0.8237113402061855 x 100 = -82.37%