-56.5% is the change from 715 to 311
Calculation steps:
[( 311 - 715 ) ÷ 715] x 100 = -56.5%
Formula
Percentage change = [(311 - 715) / 715] x 100
Subtract the new number by the original number
311 - 715 = -404
-404 ÷ 715 = -0.5650349650349651
-0.5650349650349651 x 100 = -56.5%