-92.42% is the change from 528 to 40
Calculation steps:
[( 40 - 528 ) ÷ 528] x 100 = -92.42%
Formula
Percentage change = [(40 - 528) / 528] x 100
Subtract the new number by the original number
40 - 528 = -488
-488 ÷ 528 = -0.9242424242424242
-0.9242424242424242 x 100 = -92.42%