-94.32% is the change from 528 to 30
Calculation steps:
[( 30 - 528 ) ÷ 528] x 100 = -94.32%
Formula
Percentage change = [(30 - 528) / 528] x 100
Subtract the new number by the original number
30 - 528 = -498
-498 ÷ 528 = -0.9431818181818182
-0.9431818181818182 x 100 = -94.32%