-81.66% is the change from 807 to 148
Calculation steps:
[( 148 - 807 ) ÷ 807] x 100 = -81.66%
Formula
Percentage change = [(148 - 807) / 807] x 100
Subtract the new number by the original number
148 - 807 = -659
-659 ÷ 807 = -0.8166047087980174
-0.8166047087980174 x 100 = -81.66%