-87.26% is the change from 840 to 107
Calculation steps:
[( 107 - 840 ) ÷ 840] x 100 = -87.26%
Formula
Percentage change = [(107 - 840) / 840] x 100
Subtract the new number by the original number
107 - 840 = -733
-733 ÷ 840 = -0.8726190476190476
-0.8726190476190476 x 100 = -87.26%