21.68% is the change from 512 to 623
Calculation steps:
[( 623 - 512 ) ÷ 512] x 100 = 21.68%
Formula
Percentage change = [(623 - 512) / 512] x 100
Subtract the new number by the original number
623 - 512 = 111
111 ÷ 512 = 0.216796875
0.216796875 x 100 = 21.68%