-72.67% is the change from 878 to 240
Calculation steps:
[( 240 - 878 ) ÷ 878] x 100 = -72.67%
Formula
Percentage change = [(240 - 878) / 878] x 100
Subtract the new number by the original number
240 - 878 = -638
-638 ÷ 878 = -0.7266514806378133
-0.7266514806378133 x 100 = -72.67%