-56.36% is the change from 708 to 309
Calculation steps:
[( 309 - 708 ) ÷ 708] x 100 = -56.36%
Formula
Percentage change = [(309 - 708) / 708] x 100
Subtract the new number by the original number
309 - 708 = -399
-399 ÷ 708 = -0.5635593220338984
-0.5635593220338984 x 100 = -56.36%