-46.39% is the change from 830 to 445
Calculation steps:
[( 445 - 830 ) ÷ 830] x 100 = -46.39%
Formula
Percentage change = [(445 - 830) / 830] x 100
Subtract the new number by the original number
445 - 830 = -385
-385 ÷ 830 = -0.463855421686747
-0.463855421686747 x 100 = -46.39%