-55.24% is the change from 715 to 320
Calculation steps:
[( 320 - 715 ) ÷ 715] x 100 = -55.24%
Formula
Percentage change = [(320 - 715) / 715] x 100
Subtract the new number by the original number
320 - 715 = -395
-395 ÷ 715 = -0.5524475524475524
-0.5524475524475524 x 100 = -55.24%