-39.1% is the change from 867 to 528
Calculation steps:
[( 528 - 867 ) ÷ 867] x 100 = -39.1%
Formula
Percentage change = [(528 - 867) / 867] x 100
Subtract the new number by the original number
528 - 867 = -339
-339 ÷ 867 = -0.39100346020761245
-0.39100346020761245 x 100 = -39.1%