-50.16% is the change from 630 to 314
Calculation steps:
[( 314 - 630 ) ÷ 630] x 100 = -50.16%
Formula
Percentage change = [(314 - 630) / 630] x 100
Subtract the new number by the original number
314 - 630 = -316
-316 ÷ 630 = -0.5015873015873016
-0.5015873015873016 x 100 = -50.16%