-53.2% is the change from 671 to 314
Calculation steps:
[( 314 - 671 ) ÷ 671] x 100 = -53.2%
Formula
Percentage change = [(314 - 671) / 671] x 100
Subtract the new number by the original number
314 - 671 = -357
-357 ÷ 671 = -0.5320417287630402
-0.5320417287630402 x 100 = -53.2%