-83.44% is the change from 809 to 134
Calculation steps:
[( 134 - 809 ) ÷ 809] x 100 = -83.44%
Formula
Percentage change = [(134 - 809) / 809] x 100
Subtract the new number by the original number
134 - 809 = -675
-675 ÷ 809 = -0.8343634116192831
-0.8343634116192831 x 100 = -83.44%