2.15% is the change from 512 to 523
Calculation steps:
[( 523 - 512 ) ÷ 512] x 100 = 2.15%
Formula
Percentage change = [(523 - 512) / 512] x 100
Subtract the new number by the original number
523 - 512 = 11
11 ÷ 512 = 0.021484375
0.021484375 x 100 = 2.15%