-75.78% is the change from 450 to 109
Calculation steps:
[( 109 - 450 ) ÷ 450] x 100 = -75.78%
Formula
Percentage change = [(109 - 450) / 450] x 100
Subtract the new number by the original number
109 - 450 = -341
-341 ÷ 450 = -0.7577777777777778
-0.7577777777777778 x 100 = -75.78%