-91.01% is the change from 434 to 39
Calculation steps:
[( 39 - 434 ) ÷ 434] x 100 = -91.01%
Formula
Percentage change = [(39 - 434) / 434] x 100
Subtract the new number by the original number
39 - 434 = -395
-395 ÷ 434 = -0.9101382488479263
-0.9101382488479263 x 100 = -91.01%