29.94% is the change from 511 to 664
Calculation steps:
[( 664 - 511 ) ÷ 511] x 100 = 29.94%
Formula
Percentage change = [(664 - 511) / 511] x 100
Subtract the new number by the original number
664 - 511 = 153
153 ÷ 511 = 0.299412915851272
0.299412915851272 x 100 = 29.94%