-56.6% is the change from 705 to 306
Calculation steps:
[( 306 - 705 ) ÷ 705] x 100 = -56.6%
Formula
Percentage change = [(306 - 705) / 705] x 100
Subtract the new number by the original number
306 - 705 = -399
-399 ÷ 705 = -0.5659574468085107
-0.5659574468085107 x 100 = -56.6%