-81.82% is the change from 814 to 148
Calculation steps:
[( 148 - 814 ) ÷ 814] x 100 = -81.82%
Formula
Percentage change = [(148 - 814) / 814] x 100
Subtract the new number by the original number
148 - 814 = -666
-666 ÷ 814 = -0.8181818181818182
-0.8181818181818182 x 100 = -81.82%