-93.04% is the change from 431 to 30
Calculation steps:
[( 30 - 431 ) ÷ 431] x 100 = -93.04%
Formula
Percentage change = [(30 - 431) / 431] x 100
Subtract the new number by the original number
30 - 431 = -401
-401 ÷ 431 = -0.9303944315545244
-0.9303944315545244 x 100 = -93.04%