-49.27% is the change from 613 to 311
Calculation steps:
[( 311 - 613 ) ÷ 613] x 100 = -49.27%
Formula
Percentage change = [(311 - 613) / 613] x 100
Subtract the new number by the original number
311 - 613 = -302
-302 ÷ 613 = -0.4926590538336052
-0.4926590538336052 x 100 = -49.27%