-85.84% is the change from 770 to 109
Calculation steps:
[( 109 - 770 ) ÷ 770] x 100 = -85.84%
Formula
Percentage change = [(109 - 770) / 770] x 100
Subtract the new number by the original number
109 - 770 = -661
-661 ÷ 770 = -0.8584415584415584
-0.8584415584415584 x 100 = -85.84%