-81.12% is the change from 429 to 81
Calculation steps:
[( 81 - 429 ) ÷ 429] x 100 = -81.12%
Formula
Percentage change = [(81 - 429) / 429] x 100
Subtract the new number by the original number
81 - 429 = -348
-348 ÷ 429 = -0.8111888111888111
-0.8111888111888111 x 100 = -81.12%