-49.84% is the change from 618 to 310
Calculation steps:
[( 310 - 618 ) ÷ 618] x 100 = -49.84%
Formula
Percentage change = [(310 - 618) / 618] x 100
Subtract the new number by the original number
310 - 618 = -308
-308 ÷ 618 = -0.49838187702265374
-0.49838187702265374 x 100 = -49.84%