-49.51% is the change from 614 to 310
Calculation steps:
[( 310 - 614 ) ÷ 614] x 100 = -49.51%
Formula
Percentage change = [(310 - 614) / 614] x 100
Subtract the new number by the original number
310 - 614 = -304
-304 ÷ 614 = -0.495114006514658
-0.495114006514658 x 100 = -49.51%