-51.66% is the change from 931 to 450
Calculation steps:
[( 450 - 931 ) ÷ 931] x 100 = -51.66%
Formula
Percentage change = [(450 - 931) / 931] x 100
Subtract the new number by the original number
450 - 931 = -481
-481 ÷ 931 = -0.5166487647690655
-0.5166487647690655 x 100 = -51.66%