38.09% is the change from 512 to 707
Calculation steps:
[( 707 - 512 ) ÷ 512] x 100 = 38.09%
Formula
Percentage change = [(707 - 512) / 512] x 100
Subtract the new number by the original number
707 - 512 = 195
195 ÷ 512 = 0.380859375
0.380859375 x 100 = 38.09%