29.69% is the change from 512 to 664
Calculation steps:
[( 664 - 512 ) ÷ 512] x 100 = 29.69%
Formula
Percentage change = [(664 - 512) / 512] x 100
Subtract the new number by the original number
664 - 512 = 152
152 ÷ 512 = 0.296875
0.296875 x 100 = 29.69%