-66.86% is the change from 878 to 291
Calculation steps:
[( 291 - 878 ) ÷ 878] x 100 = -66.86%
Formula
Percentage change = [(291 - 878) / 878] x 100
Subtract the new number by the original number
291 - 878 = -587
-587 ÷ 878 = -0.6685649202733486
-0.6685649202733486 x 100 = -66.86%