-56.78% is the change from 708 to 306
Calculation steps:
[( 306 - 708 ) ÷ 708] x 100 = -56.78%
Formula
Percentage change = [(306 - 708) / 708] x 100
Subtract the new number by the original number
306 - 708 = -402
-402 ÷ 708 = -0.5677966101694916
-0.5677966101694916 x 100 = -56.78%