-81.67% is the change from 813 to 149
Calculation steps:
[( 149 - 813 ) ÷ 813] x 100 = -81.67%
Formula
Percentage change = [(149 - 813) / 813] x 100
Subtract the new number by the original number
149 - 813 = -664
-664 ÷ 813 = -0.8167281672816729
-0.8167281672816729 x 100 = -81.67%