-80.78% is the change from 770 to 148
Calculation steps:
[( 148 - 770 ) ÷ 770] x 100 = -80.78%
Formula
Percentage change = [(148 - 770) / 770] x 100
Subtract the new number by the original number
148 - 770 = -622
-622 ÷ 770 = -0.8077922077922078
-0.8077922077922078 x 100 = -80.78%