-80.8% is the change from 771 to 148
Calculation steps:
[( 148 - 771 ) ÷ 771] x 100 = -80.8%
Formula
Percentage change = [(148 - 771) / 771] x 100
Subtract the new number by the original number
148 - 771 = -623
-623 ÷ 771 = -0.808041504539559
-0.808041504539559 x 100 = -80.8%