-79.53% is the change from 171 to 35
Calculation steps:
[( 35 - 171 ) ÷ 171] x 100 = -79.53%
Formula
Percentage change = [(35 - 171) / 171] x 100
Subtract the new number by the original number
35 - 171 = -136
-136 ÷ 171 = -0.7953216374269005
-0.7953216374269005 x 100 = -79.53%