-66.48% is the change from 531 to 178
Calculation steps:
[( 178 - 531 ) ÷ 531] x 100 = -66.48%
Formula
Percentage change = [(178 - 531) / 531] x 100
Subtract the new number by the original number
178 - 531 = -353
-353 ÷ 531 = -0.664783427495292
-0.664783427495292 x 100 = -66.48%