-21.82% is the change from 880 to 688
Calculation steps:
[( 688 - 880 ) ÷ 880] x 100 = -21.82%
Formula
Percentage change = [(688 - 880) / 880] x 100
Subtract the new number by the original number
688 - 880 = -192
-192 ÷ 880 = -0.21818181818181817
-0.21818181818181817 x 100 = -21.82%