-70.51% is the change from 434 to 128
Calculation steps:
[( 128 - 434 ) ÷ 434] x 100 = -70.51%
Formula
Percentage change = [(128 - 434) / 434] x 100
Subtract the new number by the original number
128 - 434 = -306
-306 ÷ 434 = -0.7050691244239631
-0.7050691244239631 x 100 = -70.51%