-81.74% is the change from 805 to 147
Calculation steps:
[( 147 - 805 ) ÷ 805] x 100 = -81.74%
Formula
Percentage change = [(147 - 805) / 805] x 100
Subtract the new number by the original number
147 - 805 = -658
-658 ÷ 805 = -0.8173913043478261
-0.8173913043478261 x 100 = -81.74%