29.88% is the change from 512 to 665
Calculation steps:
[( 665 - 512 ) ÷ 512] x 100 = 29.88%
Formula
Percentage change = [(665 - 512) / 512] x 100
Subtract the new number by the original number
665 - 512 = 153
153 ÷ 512 = 0.298828125
0.298828125 x 100 = 29.88%