-39.78% is the change from 998 to 601
Calculation steps:
[( 601 - 998 ) ÷ 998] x 100 = -39.78%
Formula
Percentage change = [(601 - 998) / 998] x 100
Subtract the new number by the original number
601 - 998 = -397
-397 ÷ 998 = -0.39779559118236474
-0.39779559118236474 x 100 = -39.78%