-93.7% is the change from 540 to 34
Calculation steps:
[( 34 - 540 ) ÷ 540] x 100 = -93.7%
Formula
Percentage change = [(34 - 540) / 540] x 100
Subtract the new number by the original number
34 - 540 = -506
-506 ÷ 540 = -0.937037037037037
-0.937037037037037 x 100 = -93.7%