-86.44% is the change from 450 to 61
Calculation steps:
[( 61 - 450 ) ÷ 450] x 100 = -86.44%
Formula
Percentage change = [(61 - 450) / 450] x 100
Subtract the new number by the original number
61 - 450 = -389
-389 ÷ 450 = -0.8644444444444445
-0.8644444444444445 x 100 = -86.44%