-81.04% is the change from 770 to 146
Calculation steps:
[( 146 - 770 ) ÷ 770] x 100 = -81.04%
Formula
Percentage change = [(146 - 770) / 770] x 100
Subtract the new number by the original number
146 - 770 = -624
-624 ÷ 770 = -0.8103896103896104
-0.8103896103896104 x 100 = -81.04%