99500% is the change from 1 to 996
Calculation steps:
[( 996 - 1 ) ÷ 1] x 100 = 99500%
Formula
Percentage change = [(996 - 1) / 1] x 100
Subtract the new number by the original number
996 - 1 = 995
995 ÷ 1 = 995
995 x 100 = 99500%
Example