32.42% is the change from 512 to 678
Calculation steps:
[( 678 - 512 ) ÷ 512] x 100 = 32.42%
Formula
Percentage change = [(678 - 512) / 512] x 100
Subtract the new number by the original number
678 - 512 = 166
166 ÷ 512 = 0.32421875
0.32421875 x 100 = 32.42%