-46.01% is the change from 815 to 440
Calculation steps:
[( 440 - 815 ) ÷ 815] x 100 = -46.01%
Formula
Percentage change = [(440 - 815) / 815] x 100
Subtract the new number by the original number
440 - 815 = -375
-375 ÷ 815 = -0.4601226993865031
-0.4601226993865031 x 100 = -46.01%