21.37% is the change from 510 to 619
Calculation steps:
[( 619 - 510 ) ÷ 510] x 100 = 21.37%
Formula
Percentage change = [(619 - 510) / 510] x 100
Subtract the new number by the original number
619 - 510 = 109
109 ÷ 510 = 0.21372549019607842
0.21372549019607842 x 100 = 21.37%