-47.78% is the change from 450 to 235
Calculation steps:
[( 235 - 450 ) ÷ 450] x 100 = -47.78%
Formula
Percentage change = [(235 - 450) / 450] x 100
Subtract the new number by the original number
235 - 450 = -215
-215 ÷ 450 = -0.4777777777777778
-0.4777777777777778 x 100 = -47.78%