-57.25% is the change from 807 to 345
Calculation steps:
[( 345 - 807 ) ÷ 807] x 100 = -57.25%
Formula
Percentage change = [(345 - 807) / 807] x 100
Subtract the new number by the original number
345 - 807 = -462
-462 ÷ 807 = -0.5724907063197026
-0.5724907063197026 x 100 = -57.25%