-93.1% is the change from 493 to 34
Calculation steps:
[( 34 - 493 ) ÷ 493] x 100 = -93.1%
Formula
Percentage change = [(34 - 493) / 493] x 100
Subtract the new number by the original number
34 - 493 = -459
-459 ÷ 493 = -0.9310344827586207
-0.9310344827586207 x 100 = -93.1%