19.96% is the change from 511 to 613
Calculation steps:
[( 613 - 511 ) ÷ 511] x 100 = 19.96%
Formula
Percentage change = [(613 - 511) / 511] x 100
Subtract the new number by the original number
613 - 511 = 102
102 ÷ 511 = 0.19960861056751467
0.19960861056751467 x 100 = 19.96%