-93.5% is the change from 523 to 34
Calculation steps:
[( 34 - 523 ) ÷ 523] x 100 = -93.5%
Formula
Percentage change = [(34 - 523) / 523] x 100
Subtract the new number by the original number
34 - 523 = -489
-489 ÷ 523 = -0.9349904397705545
-0.9349904397705545 x 100 = -93.5%