-87.1% is the change from 434 to 56
Calculation steps:
[( 56 - 434 ) ÷ 434] x 100 = -87.1%
Formula
Percentage change = [(56 - 434) / 434] x 100
Subtract the new number by the original number
56 - 434 = -378
-378 ÷ 434 = -0.8709677419354839
-0.8709677419354839 x 100 = -87.1%