-81.3% is the change from 770 to 144
Calculation steps:
[( 144 - 770 ) ÷ 770] x 100 = -81.3%
Formula
Percentage change = [(144 - 770) / 770] x 100
Subtract the new number by the original number
144 - 770 = -626
-626 ÷ 770 = -0.812987012987013
-0.812987012987013 x 100 = -81.3%