-48.47% is the change from 619 to 319
Calculation steps:
[( 319 - 619 ) ÷ 619] x 100 = -48.47%
Formula
Percentage change = [(319 - 619) / 619] x 100
Subtract the new number by the original number
319 - 619 = -300
-300 ÷ 619 = -0.48465266558966075
-0.48465266558966075 x 100 = -48.47%