-85.42% is the change from 528 to 77
Calculation steps:
[( 77 - 528 ) ÷ 528] x 100 = -85.42%
Formula
Percentage change = [(77 - 528) / 528] x 100
Subtract the new number by the original number
77 - 528 = -451
-451 ÷ 528 = -0.8541666666666666
-0.8541666666666666 x 100 = -85.42%