-99.77% is the change from 438 to 1
Calculation steps:
[( 1 - 438 ) ÷ 438] x 100 = -99.77%
Formula
Percentage change = [(1 - 438) / 438] x 100
Subtract the new number by the original number
1 - 438 = -437
-437 ÷ 438 = -0.997716894977169
-0.997716894977169 x 100 = -99.77%