5438.89% is the change from 18 to 997
Calculation steps:
[( 997 - 18 ) ÷ 18] x 100 = 5438.89%
Formula
Percentage change = [(997 - 18) / 18] x 100
Subtract the new number by the original number
997 - 18 = 979
979 ÷ 18 = 54.388888888888886
54.388888888888886 x 100 = 5438.89%