-49.68% is the change from 618 to 311
Calculation steps:
[( 311 - 618 ) ÷ 618] x 100 = -49.68%
Formula
Percentage change = [(311 - 618) / 618] x 100
Subtract the new number by the original number
311 - 618 = -307
-307 ÷ 618 = -0.4967637540453074
-0.4967637540453074 x 100 = -49.68%