-74.45% is the change from 998 to 255
Calculation steps:
[( 255 - 998 ) ÷ 998] x 100 = -74.45%
Formula
Percentage change = [(255 - 998) / 998] x 100
Subtract the new number by the original number
255 - 998 = -743
-743 ÷ 998 = -0.7444889779559118
-0.7444889779559118 x 100 = -74.45%