-88.5% is the change from 878 to 101
Calculation steps:
[( 101 - 878 ) ÷ 878] x 100 = -88.5%
Formula
Percentage change = [(101 - 878) / 878] x 100
Subtract the new number by the original number
101 - 878 = -777
-777 ÷ 878 = -0.8849658314350797
-0.8849658314350797 x 100 = -88.5%