2% is the change from 500 to 510
Calculation steps:
[( 510 - 500 ) ÷ 500] x 100 = 2%
Formula
Percentage change = [(510 - 500) / 500] x 100
Subtract the new number by the original number
510 - 500 = 10
10 ÷ 500 = 0.02
0.02 x 100 = 2%
Example