3361.11% is the change from 18 to 623
Calculation steps:
[( 623 - 18 ) ÷ 18] x 100 = 3361.11%
Formula
Percentage change = [(623 - 18) / 18] x 100
Subtract the new number by the original number
623 - 18 = 605
605 ÷ 18 = 33.611111111111114
33.611111111111114 x 100 = 3361.11%