-9.8% is the change from 990 to 893
Calculation steps:
[( 893 - 990 ) ÷ 990] x 100 = -9.8%
Formula
Percentage change = [(893 - 990) / 990] x 100
Subtract the new number by the original number
893 - 990 = -97
-97 ÷ 990 = -0.09797979797979799
-0.09797979797979799 x 100 = -9.8%