20.71% is the change from 507 to 612
Calculation steps:
[( 612 - 507 ) ÷ 507] x 100 = 20.71%
Formula
Percentage change = [(612 - 507) / 507] x 100
Subtract the new number by the original number
612 - 507 = 105
105 ÷ 507 = 0.20710059171597633
0.20710059171597633 x 100 = 20.71%