-96.21% is the change from 528 to 20
Calculation steps:
[( 20 - 528 ) ÷ 528] x 100 = -96.21%
Formula
Percentage change = [(20 - 528) / 528] x 100
Subtract the new number by the original number
20 - 528 = -508
-508 ÷ 528 = -0.9621212121212122
-0.9621212121212122 x 100 = -96.21%