18.6% is the change from 516 to 612
Calculation steps:
[( 612 - 516 ) ÷ 516] x 100 = 18.6%
Formula
Percentage change = [(612 - 516) / 516] x 100
Subtract the new number by the original number
612 - 516 = 96
96 ÷ 516 = 0.18604651162790697
0.18604651162790697 x 100 = 18.6%