-81.21% is the change from 809 to 152
Calculation steps:
[( 152 - 809 ) ÷ 809] x 100 = -81.21%
Formula
Percentage change = [(152 - 809) / 809] x 100
Subtract the new number by the original number
152 - 809 = -657
-657 ÷ 809 = -0.8121137206427689
-0.8121137206427689 x 100 = -81.21%