-18.47% is the change from 314 to 256
Calculation steps:
[( 256 - 314 ) ÷ 314] x 100 = -18.47%
Formula
Percentage change = [(256 - 314) / 314] x 100
Subtract the new number by the original number
256 - 314 = -58
-58 ÷ 314 = -0.18471337579617833
-0.18471337579617833 x 100 = -18.47%