2.4% is the change from 500 to 512
Calculation steps:
[( 512 - 500 ) ÷ 500] x 100 = 2.4%
Formula
Percentage change = [(512 - 500) / 500] x 100
Subtract the new number by the original number
512 - 500 = 12
12 ÷ 500 = 0.024
0.024 x 100 = 2.4%
Example