49.8% is the change from 512 to 767
Calculation steps:
[( 767 - 512 ) ÷ 512] x 100 = 49.8%
Formula
Percentage change = [(767 - 512) / 512] x 100
Subtract the new number by the original number
767 - 512 = 255
255 ÷ 512 = 0.498046875
0.498046875 x 100 = 49.8%