-53.13% is the change from 670 to 314
Calculation steps:
[( 314 - 670 ) ÷ 670] x 100 = -53.13%
Formula
Percentage change = [(314 - 670) / 670] x 100
Subtract the new number by the original number
314 - 670 = -356
-356 ÷ 670 = -0.5313432835820896
-0.5313432835820896 x 100 = -53.13%