-71.93% is the change from 456 to 128
Calculation steps:
[( 128 - 456 ) ÷ 456] x 100 = -71.93%
Formula
Percentage change = [(128 - 456) / 456] x 100
Subtract the new number by the original number
128 - 456 = -328
-328 ÷ 456 = -0.7192982456140351
-0.7192982456140351 x 100 = -71.93%