-68.91% is the change from 994 to 309
Calculation steps:
[( 309 - 994 ) ÷ 994] x 100 = -68.91%
Formula
Percentage change = [(309 - 994) / 994] x 100
Subtract the new number by the original number
309 - 994 = -685
-685 ÷ 994 = -0.6891348088531187
-0.6891348088531187 x 100 = -68.91%