1.79% is the change from 503 to 512
Calculation steps:
[( 512 - 503 ) ÷ 503] x 100 = 1.79%
Formula
Percentage change = [(512 - 503) / 503] x 100
Subtract the new number by the original number
512 - 503 = 9
9 ÷ 503 = 0.017892644135188866
0.017892644135188866 x 100 = 1.79%