12.28% is the change from 456 to 512
Calculation steps:
[( 512 - 456 ) ÷ 456] x 100 = 12.28%
Formula
Percentage change = [(512 - 456) / 456] x 100
Subtract the new number by the original number
512 - 456 = 56
56 ÷ 456 = 0.12280701754385964
0.12280701754385964 x 100 = 12.28%