-46.38% is the change from 815 to 437
Calculation steps:
[( 437 - 815 ) ÷ 815] x 100 = -46.38%
Formula
Percentage change = [(437 - 815) / 815] x 100
Subtract the new number by the original number
437 - 815 = -378
-378 ÷ 815 = -0.4638036809815951
-0.4638036809815951 x 100 = -46.38%