-68.38% is the change from 990 to 313
Calculation steps:
[( 313 - 990 ) ÷ 990] x 100 = -68.38%
Formula
Percentage change = [(313 - 990) / 990] x 100
Subtract the new number by the original number
313 - 990 = -677
-677 ÷ 990 = -0.6838383838383838
-0.6838383838383838 x 100 = -68.38%