-65.69% is the change from 918 to 315
Calculation steps:
[( 315 - 918 ) ÷ 918] x 100 = -65.69%
Formula
Percentage change = [(315 - 918) / 918] x 100
Subtract the new number by the original number
315 - 918 = -603
-603 ÷ 918 = -0.6568627450980392
-0.6568627450980392 x 100 = -65.69%