-93.42% is the change from 456 to 30
Calculation steps:
[( 30 - 456 ) ÷ 456] x 100 = -93.42%
Formula
Percentage change = [(30 - 456) / 456] x 100
Subtract the new number by the original number
30 - 456 = -426
-426 ÷ 456 = -0.9342105263157895
-0.9342105263157895 x 100 = -93.42%