-57.35% is the change from 809 to 345
Calculation steps:
[( 345 - 809 ) ÷ 809] x 100 = -57.35%
Formula
Percentage change = [(345 - 809) / 809] x 100
Subtract the new number by the original number
345 - 809 = -464
-464 ÷ 809 = -0.5735475896168108
-0.5735475896168108 x 100 = -57.35%