-63.58% is the change from 865 to 315
Calculation steps:
[( 315 - 865 ) ÷ 865] x 100 = -63.58%
Formula
Percentage change = [(315 - 865) / 865] x 100
Subtract the new number by the original number
315 - 865 = -550
-550 ÷ 865 = -0.6358381502890174
-0.6358381502890174 x 100 = -63.58%