-77.9% is the change from 878 to 194
Calculation steps:
[( 194 - 878 ) ÷ 878] x 100 = -77.9%
Formula
Percentage change = [(194 - 878) / 878] x 100
Subtract the new number by the original number
194 - 878 = -684
-684 ÷ 878 = -0.7790432801822323
-0.7790432801822323 x 100 = -77.9%