-13.71% is the change from 518 to 447
Calculation steps:
[( 447 - 518 ) ÷ 518] x 100 = -13.71%
Formula
Percentage change = [(447 - 518) / 518] x 100
Subtract the new number by the original number
447 - 518 = -71
-71 ÷ 518 = -0.13706563706563707
-0.13706563706563707 x 100 = -13.71%