20.31% is the change from 512 to 616
Calculation steps:
[( 616 - 512 ) ÷ 512] x 100 = 20.31%
Formula
Percentage change = [(616 - 512) / 512] x 100
Subtract the new number by the original number
616 - 512 = 104
104 ÷ 512 = 0.203125
0.203125 x 100 = 20.31%