-35.59% is the change from 340 to 219
Calculation steps:
[( 219 - 340 ) ÷ 340] x 100 = -35.59%
Formula
Percentage change = [(219 - 340) / 340] x 100
Subtract the new number by the original number
219 - 340 = -121
-121 ÷ 340 = -0.3558823529411765
-0.3558823529411765 x 100 = -35.59%