-51.61% is the change from 930 to 450
Calculation steps:
[( 450 - 930 ) ÷ 930] x 100 = -51.61%
Formula
Percentage change = [(450 - 930) / 930] x 100
Subtract the new number by the original number
450 - 930 = -480
-480 ÷ 930 = -0.5161290322580645
-0.5161290322580645 x 100 = -51.61%