12362.5% is the change from 8 to 997
Calculation steps:
[( 997 - 8 ) ÷ 8] x 100 = 12362.5%
Formula
Percentage change = [(997 - 8) / 8] x 100
Subtract the new number by the original number
997 - 8 = 989
989 ÷ 8 = 123.625
123.625 x 100 = 12362.5%
Example