-71.87% is the change from 455 to 128
Calculation steps:
[( 128 - 455 ) ÷ 455] x 100 = -71.87%
Formula
Percentage change = [(128 - 455) / 455] x 100
Subtract the new number by the original number
128 - 455 = -327
-327 ÷ 455 = -0.7186813186813187
-0.7186813186813187 x 100 = -71.87%