-46.75% is the change from 830 to 442
Calculation steps:
[( 442 - 830 ) ÷ 830] x 100 = -46.75%
Formula
Percentage change = [(442 - 830) / 830] x 100
Subtract the new number by the original number
442 - 830 = -388
-388 ÷ 830 = -0.4674698795180723
-0.4674698795180723 x 100 = -46.75%