-97.73% is the change from 880 to 20
Calculation steps:
[( 20 - 880 ) ÷ 880] x 100 = -97.73%
Formula
Percentage change = [(20 - 880) / 880] x 100
Subtract the new number by the original number
20 - 880 = -860
-860 ÷ 880 = -0.9772727272727273
-0.9772727272727273 x 100 = -97.73%