-55.94% is the change from 715 to 315
Calculation steps:
[( 315 - 715 ) ÷ 715] x 100 = -55.94%
Formula
Percentage change = [(315 - 715) / 715] x 100
Subtract the new number by the original number
315 - 715 = -400
-400 ÷ 715 = -0.5594405594405595
-0.5594405594405595 x 100 = -55.94%