-51.51% is the change from 930 to 451
Calculation steps:
[( 451 - 930 ) ÷ 930] x 100 = -51.51%
Formula
Percentage change = [(451 - 930) / 930] x 100
Subtract the new number by the original number
451 - 930 = -479
-479 ÷ 930 = -0.5150537634408602
-0.5150537634408602 x 100 = -51.51%