-12% is the change from 500 to 440
Calculation steps:
[( 440 - 500 ) ÷ 500] x 100 = -12%
Formula
Percentage change = [(440 - 500) / 500] x 100
Subtract the new number by the original number
440 - 500 = -60
-60 ÷ 500 = -0.12
-0.12 x 100 = -12%
Example