-99.77% is the change from 435 to 1
Calculation steps:
[( 1 - 435 ) ÷ 435] x 100 = -99.77%
Formula
Percentage change = [(1 - 435) / 435] x 100
Subtract the new number by the original number
1 - 435 = -434
-434 ÷ 435 = -0.9977011494252873
-0.9977011494252873 x 100 = -99.77%