-67.61% is the change from 531 to 172
Calculation steps:
[( 172 - 531 ) ÷ 531] x 100 = -67.61%
Formula
Percentage change = [(172 - 531) / 531] x 100
Subtract the new number by the original number
172 - 531 = -359
-359 ÷ 531 = -0.6760828625235404
-0.6760828625235404 x 100 = -67.61%