-36.27% is the change from 998 to 636
Calculation steps:
[( 636 - 998 ) ÷ 998] x 100 = -36.27%
Formula
Percentage change = [(636 - 998) / 998] x 100
Subtract the new number by the original number
636 - 998 = -362
-362 ÷ 998 = -0.3627254509018036
-0.3627254509018036 x 100 = -36.27%