67.58% is the change from 512 to 858
Calculation steps:
[( 858 - 512 ) ÷ 512] x 100 = 67.58%
Formula
Percentage change = [(858 - 512) / 512] x 100
Subtract the new number by the original number
858 - 512 = 346
346 ÷ 512 = 0.67578125
0.67578125 x 100 = 67.58%