-55.79% is the change from 699 to 309
Calculation steps:
[( 309 - 699 ) ÷ 699] x 100 = -55.79%
Formula
Percentage change = [(309 - 699) / 699] x 100
Subtract the new number by the original number
309 - 699 = -390
-390 ÷ 699 = -0.5579399141630901
-0.5579399141630901 x 100 = -55.79%