-69.29% is the change from 990 to 304
Calculation steps:
[( 304 - 990 ) ÷ 990] x 100 = -69.29%
Formula
Percentage change = [(304 - 990) / 990] x 100
Subtract the new number by the original number
304 - 990 = -686
-686 ÷ 990 = -0.692929292929293
-0.692929292929293 x 100 = -69.29%