-64.74% is the change from 485 to 171
Calculation steps:
[( 171 - 485 ) ÷ 485] x 100 = -64.74%
Formula
Percentage change = [(171 - 485) / 485] x 100
Subtract the new number by the original number
171 - 485 = -314
-314 ÷ 485 = -0.6474226804123712
-0.6474226804123712 x 100 = -64.74%