-81.7% is the change from 814 to 149
Calculation steps:
[( 149 - 814 ) ÷ 814] x 100 = -81.7%
Formula
Percentage change = [(149 - 814) / 814] x 100
Subtract the new number by the original number
149 - 814 = -665
-665 ÷ 814 = -0.816953316953317
-0.816953316953317 x 100 = -81.7%