-93.38% is the change from 453 to 30
Calculation steps:
[( 30 - 453 ) ÷ 453] x 100 = -93.38%
Formula
Percentage change = [(30 - 453) / 453] x 100
Subtract the new number by the original number
30 - 453 = -423
-423 ÷ 453 = -0.9337748344370861
-0.9337748344370861 x 100 = -93.38%