-48.3% is the change from 617 to 319
Calculation steps:
[( 319 - 617 ) ÷ 617] x 100 = -48.3%
Formula
Percentage change = [(319 - 617) / 617] x 100
Subtract the new number by the original number
319 - 617 = -298
-298 ÷ 617 = -0.4829821717990275
-0.4829821717990275 x 100 = -48.3%