-30.57% is the change from 880 to 611
Calculation steps:
[( 611 - 880 ) ÷ 880] x 100 = -30.57%
Formula
Percentage change = [(611 - 880) / 880] x 100
Subtract the new number by the original number
611 - 880 = -269
-269 ÷ 880 = -0.30568181818181817
-0.30568181818181817 x 100 = -30.57%