-49.51% is the change from 616 to 311
Calculation steps:
[( 311 - 616 ) ÷ 616] x 100 = -49.51%
Formula
Percentage change = [(311 - 616) / 616] x 100
Subtract the new number by the original number
311 - 616 = -305
-305 ÷ 616 = -0.49512987012987014
-0.49512987012987014 x 100 = -49.51%