19.73% is the change from 512 to 613
Calculation steps:
[( 613 - 512 ) ÷ 512] x 100 = 19.73%
Formula
Percentage change = [(613 - 512) / 512] x 100
Subtract the new number by the original number
613 - 512 = 101
101 ÷ 512 = 0.197265625
0.197265625 x 100 = 19.73%