-81.38% is the change from 435 to 81
Calculation steps:
[( 81 - 435 ) ÷ 435] x 100 = -81.38%
Formula
Percentage change = [(81 - 435) / 435] x 100
Subtract the new number by the original number
81 - 435 = -354
-354 ÷ 435 = -0.8137931034482758
-0.8137931034482758 x 100 = -81.38%