54.3% is the change from 512 to 790
Calculation steps:
[( 790 - 512 ) ÷ 512] x 100 = 54.3%
Formula
Percentage change = [(790 - 512) / 512] x 100
Subtract the new number by the original number
790 - 512 = 278
278 ÷ 512 = 0.54296875
0.54296875 x 100 = 54.3%