7.23% is the change from 512 to 549
Calculation steps:
[( 549 - 512 ) ÷ 512] x 100 = 7.23%
Formula
Percentage change = [(549 - 512) / 512] x 100
Subtract the new number by the original number
549 - 512 = 37
37 ÷ 512 = 0.072265625
0.072265625 x 100 = 7.23%