79.69% is the change from 512 to 920
Calculation steps:
[( 920 - 512 ) ÷ 512] x 100 = 79.69%
Formula
Percentage change = [(920 - 512) / 512] x 100
Subtract the new number by the original number
920 - 512 = 408
408 ÷ 512 = 0.796875
0.796875 x 100 = 79.69%