-72.69% is the change from 531 to 145
Calculation steps:
[( 145 - 531 ) ÷ 531] x 100 = -72.69%
Formula
Percentage change = [(145 - 531) / 531] x 100
Subtract the new number by the original number
145 - 531 = -386
-386 ÷ 531 = -0.7269303201506592
-0.7269303201506592 x 100 = -72.69%