-93.74% is the change from 543 to 34
Calculation steps:
[( 34 - 543 ) ÷ 543] x 100 = -93.74%
Formula
Percentage change = [(34 - 543) / 543] x 100
Subtract the new number by the original number
34 - 543 = -509
-509 ÷ 543 = -0.9373848987108656
-0.9373848987108656 x 100 = -93.74%