-65.59% is the change from 497 to 171
Calculation steps:
[( 171 - 497 ) ÷ 497] x 100 = -65.59%
Formula
Percentage change = [(171 - 497) / 497] x 100
Subtract the new number by the original number
171 - 497 = -326
-326 ÷ 497 = -0.6559356136820925
-0.6559356136820925 x 100 = -65.59%