-42.06% is the change from 340 to 197
Calculation steps:
[( 197 - 340 ) ÷ 340] x 100 = -42.06%
Formula
Percentage change = [(197 - 340) / 340] x 100
Subtract the new number by the original number
197 - 340 = -143
-143 ÷ 340 = -0.42058823529411765
-0.42058823529411765 x 100 = -42.06%