-66.29% is the change from 878 to 296
Calculation steps:
[( 296 - 878 ) ÷ 878] x 100 = -66.29%
Formula
Percentage change = [(296 - 878) / 878] x 100
Subtract the new number by the original number
296 - 878 = -582
-582 ÷ 878 = -0.662870159453303
-0.662870159453303 x 100 = -66.29%