-90.92% is the change from 859 to 78
Calculation steps:
[( 78 - 859 ) ÷ 859] x 100 = -90.92%
Formula
Percentage change = [(78 - 859) / 859] x 100
Subtract the new number by the original number
78 - 859 = -781
-781 ÷ 859 = -0.9091967403958091
-0.9091967403958091 x 100 = -90.92%