-56.64% is the change from 715 to 310
Calculation steps:
[( 310 - 715 ) ÷ 715] x 100 = -56.64%
Formula
Percentage change = [(310 - 715) / 715] x 100
Subtract the new number by the original number
310 - 715 = -405
-405 ÷ 715 = -0.5664335664335665
-0.5664335664335665 x 100 = -56.64%