-1.2% is the change from 501 to 495
Calculation steps:
[( 495 - 501 ) ÷ 501] x 100 = -1.2%
Formula
Percentage change = [(495 - 501) / 501] x 100
Subtract the new number by the original number
495 - 501 = -6
-6 ÷ 501 = -0.011976047904191617
-0.011976047904191617 x 100 = -1.2%