-74.85% is the change from 998 to 251
Calculation steps:
[( 251 - 998 ) ÷ 998] x 100 = -74.85%
Formula
Percentage change = [(251 - 998) / 998] x 100
Subtract the new number by the original number
251 - 998 = -747
-747 ÷ 998 = -0.748496993987976
-0.748496993987976 x 100 = -74.85%