-57.39% is the change from 798 to 340
Calculation steps:
[( 340 - 798 ) ÷ 798] x 100 = -57.39%
Formula
Percentage change = [(340 - 798) / 798] x 100
Subtract the new number by the original number
340 - 798 = -458
-458 ÷ 798 = -0.5739348370927319
-0.5739348370927319 x 100 = -57.39%