510.78% is the change from 102 to 623
Calculation steps:
[( 623 - 102 ) ÷ 102] x 100 = 510.78%
Formula
Percentage change = [(623 - 102) / 102] x 100
Subtract the new number by the original number
623 - 102 = 521
521 ÷ 102 = 5.107843137254902
5.107843137254902 x 100 = 510.78%