-86.87% is the change from 434 to 57
Calculation steps:
[( 57 - 434 ) ÷ 434] x 100 = -86.87%
Formula
Percentage change = [(57 - 434) / 434] x 100
Subtract the new number by the original number
57 - 434 = -377
-377 ÷ 434 = -0.868663594470046
-0.868663594470046 x 100 = -86.87%