-82.44% is the change from 450 to 79
Calculation steps:
[( 79 - 450 ) ÷ 450] x 100 = -82.44%
Formula
Percentage change = [(79 - 450) / 450] x 100
Subtract the new number by the original number
79 - 450 = -371
-371 ÷ 450 = -0.8244444444444444
-0.8244444444444444 x 100 = -82.44%