-2.73% is the change from 512 to 498
Calculation steps:
[( 498 - 512 ) ÷ 512] x 100 = -2.73%
Formula
Percentage change = [(498 - 512) / 512] x 100
Subtract the new number by the original number
498 - 512 = -14
-14 ÷ 512 = -0.02734375
-0.02734375 x 100 = -2.73%