-65.72% is the change from 919 to 315
Calculation steps:
[( 315 - 919 ) ÷ 919] x 100 = -65.72%
Formula
Percentage change = [(315 - 919) / 919] x 100
Subtract the new number by the original number
315 - 919 = -604
-604 ÷ 919 = -0.6572361262241567
-0.6572361262241567 x 100 = -65.72%