-40% is the change from 880 to 528
Calculation steps:
[( 528 - 880 ) ÷ 880] x 100 = -40%
Formula
Percentage change = [(528 - 880) / 880] x 100
Subtract the new number by the original number
528 - 880 = -352
-352 ÷ 880 = -0.4
-0.4 x 100 = -40%
Example