-65% is the change from 880 to 308
Calculation steps:
[( 308 - 880 ) ÷ 880] x 100 = -65%
Formula
Percentage change = [(308 - 880) / 880] x 100
Subtract the new number by the original number
308 - 880 = -572
-572 ÷ 880 = -0.65
-0.65 x 100 = -65%
Example