-47.79% is the change from 816 to 426
Calculation steps:
[( 426 - 816 ) ÷ 816] x 100 = -47.79%
Formula
Percentage change = [(426 - 816) / 816] x 100
Subtract the new number by the original number
426 - 816 = -390
-390 ÷ 816 = -0.47794117647058826
-0.47794117647058826 x 100 = -47.79%