-71.78% is the change from 450 to 127
Calculation steps:
[( 127 - 450 ) ÷ 450] x 100 = -71.78%
Formula
Percentage change = [(127 - 450) / 450] x 100
Subtract the new number by the original number
127 - 450 = -323
-323 ÷ 450 = -0.7177777777777777
-0.7177777777777777 x 100 = -71.78%